What is the function of an earth wire? Why is it necessary to earth metallic appliances?

What is the function of earth wire? Why is it necessary to earth metallic appliances?

(a) State Fleming's left Hand Rule. (b)List three characteristic features of the electric current used in our homes. (c) What is a fuse ? why is it called a safety device ? (d) why is it necessary to earth metallic electric appliances ?

What is the advantage of having the earth wire?