Question

When the external field acts on a dielectric slab filling the space between capacitor plates, what is its immediate effect on the dielectric molecules?

Options

• The molecules polarise

• The molecules become freely conducting

• The charge on an isolated capacitor disappears

• The plate separation becomes zero

Answer 1

The external field \[E_0\] acts on the dielectric molecules and causes them to polarise. This polarisation leads to an induced field inside the dielectric.