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

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

A

`8 A`

B

`10 A`

C

`12 A`

D

`14 A`

Text Solution

Verified by Experts

The correct Answer is:
C
`15xx40+5xx100+5xx80+1000=220xxI`
`thereforeI=11.36A~~12A`
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Knowledge Check

  • In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100W, 5fansof80 Wand 1 heater of 1 KW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be

    A
    `8 A`
    B
    `10 A`
    C
    `12 A`
    D
    `14 A`

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    A
    `300 ohm`
    B
    `220 ohm`
    C
    `806.67 ohm`
    D
    `80.6 ohm`

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    A
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    B
    60 W bulb
    C
    100 W bulb
    D
    All will be equally bright

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