Question

When a dielectric is placed in an external electric field, the electric field inside the dielectric is less than that outside it.Explain

Answer 1

Electric Field Inside a Dielectric is Less

When a dielectric is placed in an external electric field, its molecules become polarized.

The induced charges on the surfaces of the dielectric produce an electric field opposite to the applied external field.

Therefore, the net electric field inside the dielectric decreases.

\[ E_{\text{inside}} < E_{\text{outside}} \]