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 10 m long wire of 20W resistance is connected with a battery of 3 volt e.m.f. (negligible internal resistance) and a 10 W resistance is joined to it is series. Potential gradient along wire in volt per meter is                                       [MP PMT 2003]

    A)         0.02                                  

    B)         0.3

    C)         0.2

    D)         1.3

    Correct Answer: C

    Solution :

                                             Potential gradient \[x=\frac{e}{(R+{{R}_{h}}+r)}.\frac{R}{L}\] \[=\frac{3}{(20+10+0)}\times \frac{20}{10}=0.2\]                  


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