Question Detail

PHY 102 Test Compilation PHY 102 24 Objective Question

Question

Two identical conducting plates of area A are separated by distance d. A metal sheet of thickness d/2 is inserted between the plates. The ratio of capacitance before and after insertion is:
Options
A 1 : 2
Correct Answer
B 1 : 1
C 2 : 1
D sqrt2 : 1
Correct Answer

Option A is the correct answer.

Detailed Explanation

A metal sheet cancels its own thickness of the gap. Remaining gap = d/2, so C doubles. Ratio before:after = 1:2.

Hint

A metal sheet cancels its own thickness of the gap.

Question Info