Question

How is the supply of electricity maintained by a wind mill when there is no wind? By a solar panel when there is no sun?

Answer 1

Answer:

Backup facilities like storage cells take care of energy needs, during a period when there is no wind

Solar cells convert solar energy into electricity. A typical solar cell can produce a voltage of 0.5-1 V, which can produce an electricity of 1 W

Answer 2

Batteries

Explanation:

A windmill converts wind energy into electrical energy. A solar panel contains photovoltaic cells that convert solar energy into electric energy. The energy so generated when the wind and sun are available are stored in batteries. This battery provides electricity when there is no wind in the case of a windmill and no sun in the case of a solar panel.