An electric kettle for use on a 230V supply is rated at 3000W. For safe working, the cable connected to it should be able to carry at least: a) 2A b) 5A c) 10A d) 15A
An electric kettle for use on a 230V supply is rated at 3000W. For safe working, the cable connected to it should be able to carry at least: a) 2A b) 5A c) 10A d) 15A

Answer:

d) 15A is the correct answer.

Current drawn by the kettle, 
So the cable should be able to carry more current than this and hence the answer is 15 A.

An electric kettle with a 230V supply requires 15A of electricity to operate safely.