Consider a finite insulated, uncharged conductor placed near a finite positively charged conductor. The uncharged body must have a potential: (a) less than the charged conductor and more than at infinity. (b) more than the charged conductor and less than at infinity. (c) more than the charged conductor and more than at infinity. (d) less than the charged conductor and less than at infinity.

Answer: (a). Field lines start on the positive conductor and some end on the induced negative charge of the neutral body. Potential falls along field lines, so the neutral body is at lower potential than the charged one. Lines leave the neutral body's induced positive side and go to infinity, so it is at higher potential than infinity. So the answer is (a).

Consider a finite insulated, uncharged conductor placed near a finite… | JEE Main 2013 (23 Apr, Shift 1)

Q111JEE Main 2013 · 23 APR · SHIFT 1Medium

Electric Potential & Equipotentials

Consider a finite insulated, uncharged conductor placed near a finite positively charged conductor. The uncharged body must have a potential:

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Answer: (a)

Field lines start on the positive conductor and some end on the induced negative charge of the neutral body.
Potential falls along field lines, so the neutral body is at lower potential than the charged one.
Lines leave the neutral body's induced positive side and go to infinity, so it is at higher potential than infinity.
So the answer is (a).

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