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

  D. The capacitor can store more charge at a given potential difference.

Explanation:

The capacitance of a capacitor is given by:

Where, k is the dielectric constant.

When a dielectric is replaced with another having larger dielectric constant, the value of the capacitance increases.

The charge stored by the capacitor is given by:

Q = C V

where V is the voltage.

Thus, with increase in value of capacitance, the charge stored by the capacitor increases at a given potential difference.

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