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Physics · Electrostatic Potential

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): When an isolated charged capacitor is connected to an identical uncharged capacitor, the total electrostatic energy stored in the two capacitors decreases by \( 50\% \). Reason (R): The total electric charge on the plates of the two capacitors decreases by \( 50\% \) during the sharing process. In the light of the above statements, choose the correct answer from the options given below:

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. is true but (R) is false.
  4. is false but (R) is true.

Correct answer · Option 3

is true but (R) is false.

Explanation

Assertion is true: \( U_f = \frac{1}{2} U_i \), so \( 50\% \) energy is lost as heat/electromagnetic radiation during charge sharing. Reason is false: electric charge is strictly conserved by the conservation of charge; total charge remains \( Q \).
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