Question Detail

PHY 102 Capacitors and Capacitance Objective Question

Question

What is the induced charge density on the surface of a dielectric inserted between capacitor plates?
Options
A σ_ind = σ(1 - 1/K)
Correct Answer
B σ_ind = σK
C σ_ind = σ/K
D σ_ind = σ
Correct Answer

Option A is the correct answer.

Detailed Explanation

When a dielectric is inserted, induced surface charge density σ_ind = σ(1 - 1/K), where σ is the free charge density on plates.

Hint

Reduces the effective field.

Question Info