Question Detail

PHY 102 Capacitors and Capacitance Objective Question
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Question

What is the energy density (energy per unit volume) stored in the electric field of a parallel plate capacitor?
Options
A u = ½ ε₀ E²
Correct Answer
B u = ε₀ E²
C u = ½ CV²
D u = ½ QV
Correct Answer

Option A is the correct answer.

Detailed Explanation

The energy density in an electric field is u = ½ ε₀ E² (in vacuum). In a dielectric, u = ½ ε E².

Hint

½ × permittivity × field squared.

Question Info

Course: PHY 102
Topic: Capacitors and Capacitance
Type: Objective
Difficulty: Not specified
Question 103 of 1819
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