What connection is used in domestic appliances and why ?

What is the advantage of the third wire of each connection in domestic appliances?

Which type of connection is done for electric appliances ?

Thin long coil of nichrome is used in heating appliances. Why?

Why is a series arrangement not used for connecting domestic electrical appliances in a circuit?

Answer the following question: The accompanying figure shows some electrical appliances connected in a circuit in a house. why are the domestic appliances connected in this way?

What is the advantage of the earth-wire connection in domestic electrical circuits ?