In India electricity is supplied for domestic use at 220 V. It is supplied at 110 V in USA. If the 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. (frac < R >< 4 >)
D. (frac < R >< 2 >)
Answer:C
In India electricity is supplied for domestic use at 220 V. It is supplied at 110 V in USA. If the 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. (frac < R >< 4 >) D. (frac < R >< 2 >)