Zubeda made an electric circuit using a cell holder shown in Fig. 14.4, a switch and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit.

If the bulb didn’t glow, there are chances that the bulb taken by Sumedha is fused already, or the cells used in the circuit is exhausted or she hasn’t made correct connections in the circuit. It is possible that she have connected same terminals of cells.