How are the electrical appliances connected in a house circuit: in series or in parallel? Give reason.

In the household electric circuit, if one bulb is fused in a room, the other bulbs keep glowing. Explain the reason.

Draw a labelled diagram with the necessary switches to connect a bulb, a fan and a plug socket in a room with the mains. In what arrangement will you connect them to the mains?

State the colour coding of the three wires in a cable used for wiring in a household electrical circuit.