Question

_______ essentially consists of two conducting surfaces separated by a layer of an insulating medium called dielectric.
1. A semiconductor
2. A resistor
3. An inductor
4. A capacitor

Answer 1

Correct Answer - Option 4 : A capacitor

Capacitor:

A capacitor consists of two conducting surfaces separated by a/an insulator called dielectric. It increases the capacitance of the capacitor.

Parallel plate capacitors have an arrangement of electrodes and insulating material (dielectric). The two conducting plates act as electrodes. There is a dielectric between them. This acts as a separator for the plates.

The capacitance for a parallel plate capacitor is given by

\(C=\frac{A\epsilon }{d}\)

Where ϵ = ϵ0ϵr

ϵ0 = Permittivity of vacuum

ϵr = Relative permittivity

A = Area of the plate

d = Gap between the plate