Question

A parallel-plate capacitor is charged in air. It is then electrically isolated and lowered into a liquid dielectric. As a result?
A. Both the capacitance and the potential difference across the plates decrease.
B. Both the capacitance and the potential difference across the plates increase.
C. The capacitance increases and the potential difference across the plates decrease.
D. Both the capacitance and the charges on the plates decrease.
E. Both the capacitance and the charges on the plates increase

Answer 1

as capacitance is directly proportional to dielectric
so it increases
as capacitance and potential difference are inversely proportional
so potential difference decreases