Question

the main power supply of a house is through a 5-a fuse . how many 100-w bulb can be used in this house of correct voltage?

Answer 1

Suppose x number of such bulbs can be used 

Power of one bulb = 100 watt 

Power of x bulbs (p) = 100 X x watts 

Potential difference (V) = 220 volts 

I = 5 ampere 

We know that P = VI 

100 X x = 220 x 5 

x = 220 x 5 /100 = 11 bulbs

Answer 2

Explanation:

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