(i) Series Circuit:

If two or more bulbs are connected in series in a circuit, then that type of circuit is called series circuit. if any one of the bulbs is damaged or disconnected, the entire circuit will not work.
(ii) Parallel Circuit:

If two or more bulbs are connected in parallel in a circuit, then that type of circuit is called parallel circuit. If any one of the bulb ¡s damaged or disconnected, the other part of the circuit will work. So parallel circuits are used in homes.