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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)(V) of a charged spherical conductor of radius (R)(R) with radial distance (r)(r) from the center?

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Answer: (d)

  1. Inside a charged conductor E=0E = 0, so V=kQRV = \frac{kQ}{R} is constant for 0≤r≤R0 \le r \le R.
  2. For r>Rr > R: V=kQrV = \frac{kQ}{r}, a 1/r1/r fall.
  3. Graph (d) is flat from 00 to RR then falls as 1/r1/r, so the answer is (d).
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