Question

A filament lamp is designed to work at a potential difference 250V have power 100W. what will be the power of this lamp when connected to a 100V supply?​

Answer 1

Answer:

answer is 40W

Explanation:

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Answer 2

Answer:

40w

Explanation:

We have given that,

V=250 v & P=100w

if V=100v

then,

P=?/X

now

250/100=100/X

X=100x100/250

X=40w

*the power of this lamp will be 40w