The charge on a conductor is positive Q and its potential is V
(i.e. the electric potential on its surface)
If some more positive charge is added to it, what are the possible values of its new potential?
A
3V2
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B
2V3
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C
5V6
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D
4V3
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Solution
The correct option is D4V3 For any isolated conductor we have learned that Q is directly proportional to V. So as Q increases V must increase. Now since we don’t know the shape of the conductor we can’t say to what exact value V would increase to. But we can be sure of one thing - that it will increase!! So in the given options the possible values are either 3V2or4V3. Other values are less than the initial potential V.