A parallel-plate capacitor is connected to an ideal battery that maintains a constant…
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A parallel-plate capacitor is connected to an ideal battery that maintains a constant potential difference across the plates. Which single modification listed below results in the greatest increase in the energy stored in the capacitor?
(a) Doubling the plate area while keeping all other factors the same.
(b) Doubling the plate separation while keeping all other factors the same.
(c) Inserting a dielectric with κ=4 where there was previously air.
(d) Halving the plate separation while keeping all other factors the same.