In india electricity is supplied for domestic use at $220\,\,V$. It is supplied at $110\,\, V$ in $USA$. If resistance of $60\,\, W$ bulb for use in India is $R$, then the resistance of $60\,\, W$ bulb for use in $USA$ will be
A$R$
B$2R$
C$\frac{R}{4}$
D$\frac{R}{2}$
AIPMT 2004, Medium
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C$\frac{R}{4}$
c $P=\frac {V^2}{R}$
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