(a) Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? Why?
(b) Chrismas tree lamps are usually wired in series. What happens if one lamp breaks?
(c) An electrician has wired a house in such a way that if a lamp gets fused in one room of the house, all the lamps in other rooms of the house stop working. What is the defect in the wiring?
(d) Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an A on your diagram to show where an ammeter should be placed to measure the current.
a) Parallel connection is a better way to connect lights and other appliances in a domestic circuit. This ensures that all the appliances get the rated voltage and can be operated independently. Moreover, even if one appliance stops working/ gets fused, rest of the appliances continue functioning normally.
b) If one lamp breaks in a series connection, all the other lamps would also stop glowing.
c) The electrician has connected the lamps in series. It should have been connected in parallel.
d) Following is the circuit diagram: