Question

heya
pls answer this question.....
! give reason why in a three pin plug,the earth pin is thicker and longer than other two pin!...​

Answer 1

Answer:

The earth pin is long so that the earth connection is made first. This ensures the safety of the user because if the appliance is defective, the fuse will blow off. The earth pin is made thicker so that even by mistake it cannot be inserted into the hole for the live or neutral connection of the socket.

hope it's work

Answer 2

Answer:

Its longer than the other two pins because when you insert the plug,the earth pin will first come in contact with the power supply before the other two(live and neutral) so that any unwanted charges which may be in the circuit will be removed(grounded) before the other two pins go inside the terminals.