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In a large building, there are 15 bulbs ...

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

`10 A`

C

`12 A`

D

`14 A`

Text Solution

Verified by Experts

The correct Answer is:
C
Total power
`=15 xx 40 + 5 xx 100 + 5 xx 80 + 1000`
`=600 + 500 + 40 + 1000 = 2500W`
`I = 2500/220 = 11.3 A`
Minium capacity = 12 A
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