Physics Electrostatics Potential & Capacitance Telangana & AP CET Previous Year Question MCQ (Single Correct)

A capacitor is fully charged with a battery and then disconnected. A dielectric is then inserted into the capacitor. How do charges on surface of the dielectric and outer surface of the plates of the capacitor would change respectively?

A
Increases, decreases
B
Decreases, increases
C
Increases, remain unchanged
D
Remains unchanged, increases

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Verified by Experts
The correct answer is:
C

When a dielectric is introduced in between plates it gets polarized as shown.

Due to this, charges at surface of dielectric gets increased:
Since, there is no external power source.
Hence, charges remains unchanged.

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