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

In a large building, there are 15 bulbs of 40W, 5 bulbs of 100W, 5 fans of 80W and 1 heater of 1 kW are connected. The voltage of electric mains is 220V. The minimum capacity of the main fuse of the building will be ………………. .

A

`14 A`

B

`8 A`

C

`10 A `

D

`12 A`

Text Solution

Verified by Experts

The correct Answer is:
D
Total Power P ` = 15 xx 40 + 5 xx 100 + 5 xx 80 + 1000`
` = 600 + 500 + 400 + 1000`
` = 2500 W`.
` V = 220 V`
` P = VI`
` I = P/V = 2500/220 = 11.363 A`
` = 12A` (approximate)
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