An electric iron is rated 220V, 2kW
Electricity and Magnetism (10)An electric iron is rated 220V, 2kW
- If the iron is used for 2h daily find the cost of running it for one week if it costs Rs. 4.25 per kWh.
- Why is the fuse absolutely necessary in a power circuit?
Answer
(i) E = P x t = 2 x 2 = 4 kW h
Cost for running it for a week = 4 x 7 x 4.25 = Rs. 119
(ii) Power circuits draw large amount of current
Electric shock in this circuit is very fatal hence to avoid it fuse is necessary in the power circuit/ to safeguard.
- Exam Year: 2018