12th Class Physics Electrostatics & Capacitance Question Bank

done Assertion And Reason (MCQs) - Electric Potential and Capacitance Total Questions - 40

• question_answer1)

  Directions : (1-40) For Assertion and Reason Type Questions

  In this type of question, a statement of assertion [A] is followed by a statement of reason [R]. Mark the correct choice as :

  ASSERTION: Positive charge always moves from a higher potential point to a lower potential point.

  REASON: Electric potential is a vector quantity

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer2)

  ASSERTION: In an electric dipole two opposite charges are placed at small distance apart.

  REASON: An isolated non polar molecule behaves like an electric dipole.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer3)

  ASSERTION: On going away from a point charge or a small electric dipole, electric potential decreases at the same rate in both the cases.

  REASON: Electric potential is inversely proportional to square of distance from the charge in all cases.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer4)

  ASSERTION: If the distance between parallel plates of a capacitor is halved and dielectric constant is made three times, then the capacitance becomes six times.

  REASON: Capacitance of the capacitor does not depend upon the nature of the material of the plates.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer5)

  ASSERTION: An applied electric field will polarize the polar dielectric material.

  REASON: In polar dielectrics, each molecule has a permanent dipole moment but these are randomly oriented in the absence of an extremely applied electric field.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer6)

  ASSERTION: The tyres of aircrafts are slightly conducting.

  REASON: If a conductor is connected to ground, the extra charge induced on conductor will flow to ground.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer7)

  ASSERTION: The surface of a conductor is an equipotential surface.

  REASON: Conductor allows the flow of charge.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer8)

  ASSERTION: A capacitance can be broken by placing large amount of charge on it.

  REASON: After breakage potential, capacitor is destroyed.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer9)

  ASSERTION: The whole charge of a conductor cannot be transferred to another isolated conductor.

  REASON: The total transfer of charge from one to another is not possible.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer10)

  ASSERTION: A metallic shield in the form of a hollow shell can be built to block an elastic field.

  REASON: In a hollow spherical shell, the electric field inside is zero at every point.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer11)

  ASSERTION: Conductors having equal positive charge and volume must also have same potential.

  REASON: Potential depends only on charge and volume of conductor.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer12)

  ASSERTION: Two condensers of same capacity are connected first in parallel and then in series. The ratio of resultant capacitance in the two cases will be 4:1.

  REASON: In parallel, capacitance increases and in series, capacitance decreases.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer13)

  ASSERTION: No work is done in taking a positive charge from the point to outer inside a positively charged metallic sphere while outside the sphere work is done in taking the charge toward the sphere.

  REASON: Inside the sphere electric potential is same at each potential, but outside it is different for different points.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer14)

  ASSERTION: Increasing the charge on the plates of a capacitor means increasing the capacitance.

  REASON: Capacitance is directly proportional to charge.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer15)

  ASSERTION: Charge is the rate of flow of current.

  REASON: Electric charge will not flow between two charged bodies when connected if their charges are same.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer16)

  ASSERTION: Circuit containing capacitors should be handled cautiously even when there is no current.

  REASON: The capacitor are very delicate and so quickly breakdown.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer17)

  ASSERTION: As battery remains connected, potential of capacitor will not change.

  REASON: If the capacitor is kept connected with the battery and then the dielectric slab is inserted between the plates, both the charge on capacitor and the energy stored in the capacitor gets decreased.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer18)

  ASSERTION: Electric potential is scalar and electric intensity is vector quantity.

  REASON: The value of electric potential and electric intensity at the middle point of the line joining an electron and a proton is zero.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer19)

  ASSERTION: The force between the plates of parallel plate capacitor is proportional to charge on it.

  REASON: Force is equal to charge per unit area per \[{{\in }_{0}}\].

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer20)

  ASSERTION: At a point in space, the electric field points towards north. In the region, surrounding this point the rate of change of potential will be zero along the east and west.

  REASON: Electric field due to a charge in the space around the charge.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer21)

  ASSERTION: A capacitor is connected to a battery. If we move its plate further apart, work will be done against the electrostatic attraction between the plates and the energy of the capacitor gets decreased.

  REASON: The energy stored in capacitor is dissipated in the form of heat energy.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer22)

  ASSERTION: A capacitor can be given only a limited quantity of charge.

  REASON: Capacitor is an arrangement which can store sufficient quantity of charge.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer23)

  ASSERTION: The lightning conductor at the top of high building has sharp pointed ends.

  REASON: The surface of charge at sharp points is very high resulting in setting up of electric wind.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer24)

  ASSERTION: Capacity of a parallel plate capacitor increases when distance between the plates is decreased.

  REASON: Capacitance of capacitor is inversely proportional to distance between them.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer25)

  ASSERTION: When a dielectric medium is filled between the plates of a condenser, its capacitance increases.

  REASON: The dielectric medium reduces the potential difference between the plates of the condenser.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer26)

  ASSERTION: The capacity of conductor, under given circumstances remains constant irrespective of the charge present on it.

  REASON: Capacity depends on size and shape of conductor and also on the surrounding medium.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer27)

  ASSERTION: The force with which one plate of a parallel plate capacitor is attracted towards the other plate is equal to square of surface density per \[{{\in }_{0}}\] per unit area.

  REASON: The electric field due to one charged plate of the capacitor at the location of the other is equal to surface density per \[{{\in }_{0}}\].

   
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer28)

  ASSERTION: When air between the plates of a parallel plate condenser is replaced by an insulating medium of dielectric constant its capacity increases.

  REASON: Electric field intensity between the plates with dielectric in between it is reduced.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer29)

  ASSERTION: Electron has a negative charge.

  REASON: Electrons move always from a region of higher potential to a region of lower potential.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer30)

  ASSERTION: The dielectric constant for metals is infinity.

  REASON: When a charged capacitor is filled completely with a metallic slab, its capacity becomes very large.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer31)

  ASSERTION: Two adjacent conductors, carrying the same positive charge have no potential difference between them.

  REASON: The potential of a conductor does not depend upon the charge given to it.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer32)

  ASSERTION: When charges are shared between two bodies, there occurs no loss of charge, but there occur a loss of energy.

  REASON: In case of sharing of charges law of conservation of energy fails.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer33)

  ASSERTION: In the absence of an externally applied electric field, the displacement per unit volume of a polar dielectric material is constant.

  REASON: In polar dielectrics, each molecule has a temporary dipole moment but these are randomly oriented in the absence of an externally applied electric field.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer34)

  ASSERTION: Charge on all the condensers connected in series is the same.

  REASON: Capacitance of capacitor is directly proportional to charge on it.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer35)

  ASSERTION: Electrons move away from a low potential to high potential region.

  REASON: Because electrons has negative charge.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer36)

  ASSERTION: A parallel plate capacitor is connected across battery through a key. A dielectric slab of constant K is introduced between the plates. The energy which is stored becomes K times.

  REASON: The surface density of charge on the plate remains constant or unchanged.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer37)
  Expected Questions

  ASSERTION: Electric potential of earth is taken zero.

  REASON: No electric field exists on earth surface.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer38)

  ASSERTION: An electric field is preferred in comparison to magnetic field for detecting the electron beam in a television picture tube.

  REASON: Electric field requires low voltage.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer39)

  ASSERTION: Lines of force are perpendicular to conductor surface.

  REASON: Generally electric field is perpendicular to equipotential surface.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer40)

  ASSERTION: If a dielectric is placed in external field then field inside dielectric will be less than applied field.

  REASON: Electric field will induce dipole moment opposite to field direction.

  A)
  If both assertion and reason are true and reason is the correct explanation of assertion. done clear
  B)
  If both assertion and reason are true and reason is not the correct explanation of assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If both assertion and reason are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow