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  • A factory is served by a 220 V supply line. In a circuit protected by a fuse marked 10 A, the maximum number of 100 W lamps in parallel that can be turned on isO

A factory is served by a 220 V supply line. In a circuit protected by a fuse marked 10 A, the maximum number of 100 W lamps in parallel that can be turned on is

Option: 1

11


Option: 2

22


Option: 3

33


Option: 4

66


Answers (1)

best_answer

Current required by each bulb,

\mathrm{I=\frac{P}{V}=\frac{100}{220} \mathrm{~A} }
If n bulbs are joined in parallel, then
\mathrm{n I=I_{\text {fuse }} \text { or } n \times \frac{100}{220}=10 \text { or } n=22 }

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Gaurav

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