PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Two identical parallel-plate capacitors, X and Y, have the same plate separation and are both connected to an ideal 12 V battery until they reach steady state. Capacitor X contains only air between its plates (κ≈1), while capacitor Y is completely filled with a dielectric material of constant κ=4. Which statement correctly compares the electric fields EX and EY within the regions between the plates?
(a) EX>EY
(b) Both EX and EY are zero after a long time.
(c) EX=EY
(d) EX<EY