Question

What is a solar cell ? Draw the labelled diagram of a solar cell.
(b) Name the semi-conductor material which is usually used for making solar cells.
(c) Write the uses of solar cells.

Answer 1

(a) Solar cell is a device which converts solar energy directly into electrical energy.

(b) Silicon

(c) Use of solar cell

i. To provide electricity in artificial satellites and space probes.

ii. To provide electricity to remote areas where normal electricity transmission lines do not exist.

iii. To provide electricity to light houses iv. To operate traffic signals, watches, calculators and toys.