Question

Why does current flow through earth wire

Answer 1

APPLIANCES WITH METALLIC COVERS ARE CONNECTED TO THE EARTH WIRE. WHILE USING THESE APPLIANCES IN CASE OF LEAKAGE OF ELECTRIC CURRENT TO THE METALLIC COVERS , THESE METALLIC COVERS KEEP THEIR POTENTIAL TO THAT OF THE EARTH THEREBY PREVENTING PEOPLE FROM GETTING SEVERE ELECTRIC SHOCKS. THE EARTH WIRE IS OFTEN CONNECTED TO A  METALLIC PLATE BURIED DEEP DOWN IN THE SOIL NEARBY THE HOUSE.