Question

why are only solar cells used as a source of power in satellites

Answer 1

It is used in artificial satellites because if a battery is fixed it will soon run out of power and it is impossible to use a wired switch for the satellite. This is why satellites are fixed with solar panels as the sun gives unlimited energy to the satellite. Therefore it is the best source of getting power.

Answer 2

in satellites solar cells are used for EX; if satellite want to revolve around mars it need energy to revolve around it but it take energy until it enter into mars orbit after to travel through sun energy by solar cells and when the there is mars between sun and satellite it use it's own energy
hope its helpful
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