Question

A parallel plate air capacity 'C' farad, potential 'V' volt and energy 'E' joule. When the gap between the plates is completely filled with dielectric ______.

Options

• both V and E increase

• both V and E decrease

• V decrease, E increases

• V increases, E decrease

Answer 1

A parallel plate air capacity 'C' farad, potential 'V' volt and energy 'E' joule. When the gap between the plates is completely filled with dielectric both V and E decrease.

Explanation:

Note: We have taken into account keeping the battery and capacitor separate. Potential difference results from the introduction of dielectric inside the parallel plate capacitor.

V = `"V"_0/"K"`

Also, energy decreases, i.e., U = `"U"_0/"K"`