In India electricity is supplied for domestic use at 220V. It is supplied at 110V in USA. If resistance of a 60W bulb for use in India. is R, the resistance of a 60W bulb for use in USA will be:
A
R
B
2R
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Since, power rating of bulb in both the countries India and USA should be same, so
= 
⇒ 
= 
⇒ 
= 
⇒ R 2 = 
( R 1 = R)
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