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A Parallel Plate Capacitor Is Attached to a Voltage Source

Question 20

Multiple Choice

A parallel plate capacitor is attached to a voltage source providing 12 V. If an insulator of dielectric constant 6.0 is then inserted between the capacitor plates, what happens to the surface charge density on the plates, assuming the voltage source is still attached?


A) It increases by a factor of 6.0.
B) It increases by a factor of 2.0.
C) It decreases by a factor of 6.0.
D) It decreases by a factor of 2.0.
E) It stays the same.

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