Potential Drop

JEE Mains 2015 Help › Electricity and magnetism questions › Potential Drop

Q: The potential drop V₀ (in VOLTS) across a resistor varies as V₀ = 2 i^3/2 where ' i ' is the current in mA. Find the resistance of above device when V₀ = 16 V.

Q: A conducting sphere of radius ' a ' has charge Q on it. It is enclosed by a neutral concentric thick shell having inner radius ' 2a ' and outer radius ' 3a '. Find the Electrostatic Potential Energy of the system?

In this case I'm having problem in writing the Potential Energy of interaction among the two shells. Which distance to take?

#Physics #Electricity and magnetism

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6 Answers

1

jit kamdar ·2011-10-01 03:46:36

when v₀=16...i=2mA.....
so resistance=vi=162x10^-3=8x10³

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71

Vivek @ Born this Way ·2011-10-01 06:14:04

It isn't correct!

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Debosmit Majumder ·2011-10-01 06:22:11

1. Ans:4 x 10^3
nt sure....verify....

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Vivek @ Born this Way ·2011-10-02 01:58:15

Yes it is. ??

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Ashish Kothari ·2011-10-02 04:09:52

I guess Jit just made an incorrect calculation.

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Debosmit Majumder ·2011-10-02 04:14:14

yup...i=4mA

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Your Answer

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