Physics, asked by yadavlucky6538, 1 year ago

An electric bulb is rated 220v - 100 what is the resistance if 5bulbs are burn for 4hoirs

Answers

Answered by allurivigneshreddy20
0
220÷100=2.2
2.2×5×4=44
Answered by Anonymous
2

Rating of bulb = 220 v - 100 A .


Potential difference = 200 v

Current = 100 A


Power = 100 A × 220 V

           = 22000 W.


I²Rt = 22,000 W × t

= > I²R = 22,000 W

= > 100² × R = 22,000 W

= > R = 22,000 ohms/ ( 100 × 100 )

= > R = 22,000 / 10,000

= > R = 22/10

= > R = 2.2


The resistance is 2.2 ohms

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