Question

An electric heater of power 2kw is connected to a circuit providing voltage of 220 v.calculate the appropriate ratting of fuse to be connected in the circuit​

Answer 1

Answer:

Answer

Given,

Power=2kw=2000W,current=5A,voltage=220V

So power=current×voltage⇒current=voltagepower⇒2202000=9A

Thus the current will exceeds and the fuse will burn out if there is no fuse then overloading will cause melting of wires which will cause the short circuit which will cause a fire.