An electric kettle is rated 750 W ; 220 V. Can this kettle be used in a circuit which has a fuse of current…
An electric kettle is rated 750 W ; 220 V. Can this kettle be used in a circuit which has a fuse of current rating 3 A ? Give reason for your answer.
Solution
P = 750 W, V = 220 V
• Current drawn by kettle, I = P/V
= 750 W/220 V
= 3.4 A
• No, this kettle cannot be used.
• The current drawn by the kettle is more than the fuse rating (3A). So, the fuse will melt and break the circuit.