Answer:
The charge stored in a parallel plate capacitor is proportional to the potential, and capacitance across the plates.
Step-by-step explanation:
The capacitance of a parallel plate capacitor is given by:

where
Q is the charge stored
V is the potential difference across the capacitor
Re-arranging the formula, we get

From this expression, we see that the charge stored (Q) is proportional to both the potential (V) and the capacitance (C).