Science, asked by sinhashalini485, 10 months ago

Two electric lamps are rated 220V - 100W and 220V - 40W respectively. Their electric resistances are:​

Answers

Answered by vanjarapusriramya
5

Answer:

  • the electrical resistance of first lamp (220v,100w) is 484 ohms
  • the electrical resistance of second lamp (220v,40w) is 1210 ohms

Explanation:

wkt

power =voltage × current

=V×I

=V×VR

P = V^2/R

Apply formula you get resistance of two lamps

Attachments:
Answered by Anonymous
1
Two electric lamps are rated as 220V. ... Two bulbs are market 220V, 100W and 220V,50W respectively. ... An electrial device of resistance R is connected across.
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