Question Detail

PHY 102 Test Compilation PHY 102 2 Objective Question

Question

If the distance between two closely spaced parallel plates is halved, the electric field between them is
Options
A Is also halved
B becomes only ¼ as large
C remains the same
Correct Answer
D is doubled
Correct Answer

Option C is the correct answer.

Detailed Explanation

For parallel plates with constant voltage, E = V/d. If d halved, E doubles. But if charge constant, E = σ/ε₀ independent of d. Question ambiguous. Most assume constant V → E doubles. None say that. Assuming constant charge (isolated), E same. Option C.

Hint

If isolated, E independent of d.

Question Info