Normally,a red colour cable is used for the live wire in domestic electrical circuits.

The magnetic field around a current-carrying straight conductor is:

$(a)$ Which effect of the electric current is utilised in the working of an electrical fuse?
$(b)$ Is a fuse connected in series or in parallel in a household circuit?
$(c)$ Draw a schematic labelled diagram of a domestic circuit which has a provision of a main fuse,meter,one light bulb,and a switch socket.

Mention the voltage and frequency of the electric current that we receive in our houses.

What happens if a full circular ring is used instead of a split ring (commutator) in an electric generator?

Which of the following is used in a fire alarm?