2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर

JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Different Measuring Instruments

  • question_answer
    A 2 volt battery, a \[15\,\Omega \] resistor and a potentiometer of 100 cm length, all are connected in series. If the resistance of potentiometer wire  is \[5\,\Omega \], then the potential gradient of the potentiometer wire is                                                                  [AIIMS 1982]

    A)                    0.005 V/cm                    

    B)            0.05 V/cm

    C)                    0.02 V/cm                      

    D)            0.2 V/cm

    Correct Answer: A

    Solution :

                 Potential gradient \[=\frac{e}{(R+{{R}_{h}}+r)}.\frac{R}{L}\] \[=\frac{2}{(15+5+0)}\times \frac{5}{1}\]\[=0.5\frac{V}{m}=0.005\,\frac{V}{cm}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner