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PHY 102 Test Compilation PHY 102 7 Objective Question

Question

Parallel plate air capacitor with constant voltage source, dielectric K=2 inserted. C and Q change?
Options
A C=C₀/2, Q=2Q₀
B C=2C₀, Q=Q₀/2
C C=C₀/2, Q=Q₀/2
D C=2C₀, Q=2Q₀
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

C = κC₀ = 2C₀. V constant, so Q = CV = 2C₀V = 2Q₀.

Hint

C ↑, V constant → Q ↑.

Question Info