Question

Imagine that you are sitting in a chamber with your back to one wall an
electron beam moving horizontally from back wall towards the front wall, is
reflected by a strong magnetic field to your right side
a) What is the direction of magnetic field ?
b) Which rule is applicable for this? Define.
Or
What is the function of earth wire, why is it necessary to earthling
metallic appliances ?

Answer 1

Downward direction

B)flemings left hand rule is applicable (direction of current is opposite to direction of flow of electron)

Earth wire prevents the leakage of current

If there is a leakage of current In a metallic device, a person who touches it will get a shock. To avoid this earthing is done