JEE Main · 2026 · 04 Apr 2026 · Shift 2 · Electrostatics

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Given below are two statements: one is labelled as
Assertion A and the other is labelled as Reason R
Assertion A : In electrostatics, a conductor does not store any net charge inside.
Reason R: Inside the capacitor (with no dielectric medium), the free charge carriers, if placed between the plates of capacitor, experience force and drift.
Choose the correct answer from the options given below.
  1. (A)Both and are true and is the correct explanation of .
  2. (B)Both and are true but is NOT the correct explanation of .✓ Correct
  3. (C) is true but is false
  4. (D) is false but is true

Answer: (B)

Solution

In electrostatic equilibrium any excess charge on a conductor resides on its outer surface and the interior carries no net charge, so the assertion is correct. It is also true that a free charge placed between the plates of a capacitor feels the field there and drifts, so the reason is a valid statement on its own. However, charge collects on the surface because the field inside a conductor in equilibrium is zero and like charges repel to the boundary, not because of the drift the reason describes; the reason does not account for the assertion. Both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.

JEE Main · 2026 · 04 Apr 2026 · Shift 2 · Single correct option

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