A capacitor of capacitance is connected to a battery of emf

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A capacitor of capacitance

C_0

is connected to a battery of emf

V_0

. While the battery remains connected, a dielectric of constant

\kappa

is fully inserted between the plates. What happens to the energy stored in the capacitor? (a)

\dfrac{U_0}{\kappa}

(b)

\kappa^{2} U_0

(c)

\kappa U_0

(d)

U_0