Physics, asked by Catherine5, 7 months ago

a filament lamp designed to work at a potential difference 250v has power 100w what will be the power of this lamp when connected to a 100v supply ?

Answers

Answered by jaymahajan1234jm

14

Answer: 40w

Explanatioansn:if lamp take 250v and 100w

When lamp take 100v and x w

•: 100×100/250=x which will be 40w

Sorry for bad English

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