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JEE Main 2023 (31 Jan, Shift 1) · Electric Potential & Equipotentials

Electric Potential & Equipotentials question from JEE Main 2023 (31 Jan, Shift 1)

Q59JEE Main 2023 · 31 JAN · SHIFT 1Easy

Electric Potential & Equipotentials

Which of the following correctly represents the variation of electric potential $(V)$ of a charged spherical conductor of radius $(R)$ with radial distance $(r)$ from the center?

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Answer: (d)

Inside a charged conductor $E = 0$ , so $V = \frac{kQ}{R}$ is constant for $0 \le r \le R$ .
For $r > R$ : $V = \frac{kQ}{r}$ , a $1/r$ fall.
Graph (d) is flat from $0$ to $R$ then falls as $1/r$ , so the answer is (d).

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