4
QuizMultiple Choice

Electric Energy Storage

Question 4 • 350CR Integrated Science

What is the result of changing the dielectric in a capacitor to a dielectric with a larger dielectric constant?

Answer
A
The capacitor will have a lower charge at a given potential energy.
B
The capacitor will have a higher potential difference at a given potential energy.
C
The capacitor can store less potential energy at a given potential difference.
D
The capacitor can store more charge at a given potential difference.

Explanation

A larger dielectric constant increases the capacitance of a capacitor. Since charge and potential difference are related by Q = CV, at the same potential difference a larger capacitance means the capacitor stores more charge. Therefore, the correct choice is D, “The capacitor can store more charge at a given potential difference.”

AI-written and checked against the verified answer.

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