A fault makes a current of 40 A flow in the earth wire of a metal-cased appliance. A person is touching the metal case. Which statement explains why almost all of this current flows in the earth wire?
The earth wire has a much lower resistance than the person has
The earth wire has a much higher resistance than the person has
The current in the earth wire changes direction 50 times each second
The metal case is at about 230 V and so is the person on the ground