A air-filled parallel-plate capacitor is charged to a potential difference of and…

PHYSICS · Single correct · AP · Physics C: Electricity and Magnetism · Conductors and Capacitors · Conductors and Capacitors

Problem

2.0\,\mu\text{F}

air-filled parallel-plate capacitor is charged to a potential difference of

100\,\text{V}

and then disconnected from the battery. A dielectric slab with

\kappa = 3.0

is inserted completely between the plates. What is the new potential difference across the capacitor? (a)

300\,\text{V}

(b)

33\,\text{V}

(c)

100\,\text{V}

(d)

58\,\text{V}