Question

In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of electric mains is 220 V. The minimum capacity fo the main fuse of the building will be :
A. `8A`
B. `10A`
C. `12A`
D. `14A`

Answer 1

Correct Answer - C
(c) Total power consumed by electrical appliances in the building, `P_(t otal) = 2500 W`
`Watt = Volt xx ampere`
`rArr 2500 = V xx I`
`rArr 2500 = 220I`
`rArr I = 2500/220 = 11.36 ~~ 12A`
(minimum capacity of main fuse).