Answer to Question #228265 in Physics for Porco

Question #228265

The largest number of 100 W electric light bulbs which can be operated from a 240 V supply fitted with a 13 A fuse is


1
Expert's answer
2021-08-26T08:11:05-0400

Given:

V=240VV=240\:\rm V

Imax=13AI_{\rm max}=13\:\rm A

P=100WP=100\:\rm W


The maximum power in circuit

Pmax=ImaxV=13240=3120WP_{\rm max}=I_{\rm max}V=13*240=3120\:\rm W

Hence, the largest number of 100 W electric light bulbs which can be operated in circuit

N=PmaxP=3120100=31N=\frac{P_{\rm max}}{P}=\frac{3120}{100}=31


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Comments

Faith
16.10.22, 10:19

very helpful

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