Physics

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}

33\,\text{V}

100\,\text{V}

58\,\text{V}