An electric kettle rated has its metal body connected to earth through a wire of…
PHYSICS · Multi-part · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
An electric kettle rated 230V,1000W has its metal body connected to earth through a wire of resistance 1Ω. Owing to a fault, the live conductor touches the kettle body.
(i) Calculate the current that will flow through the earth wire immediately after the fault occurs.
(ii) The resistance of a human body with dry skin is about 50kΩ. Determine the current that would pass through a person touching the kettle if no earth wire were provided.
(iii) Compare the two currents obtained above and state which situation is safer, giving a brief reason.