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Fuse

In a large bu...

Question

In a large building there are 15 bulbs of 40 W each. The voltage of electric mains is 220 V. The minimum capacity of the main fuse in the building will be ______ Amperes.

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Solution

$P = 600 W, V = 220 V I = \frac{600}{220} = 2.72 a m p$

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