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Two identical electric lamps marked $500 \mathrm{~W}, 220 \mathrm{~V}$ are connected in series and then joined to a $110 \mathrm{~V}$ line. The power consumed by each lamp is
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The correct answer is:
$\frac{125}{4} W$
Voltage across each bulb $V=\frac{110}{2}=55 \mathrm{~W}$ so,power consumed by each bulb will be
$\begin{aligned} P^{\prime} & =\left(\frac{55}{220}\right)^2 \times 500 \\ & =\frac{125}{4} W\end{aligned}$
$\begin{aligned} P^{\prime} & =\left(\frac{55}{220}\right)^2 \times 500 \\ & =\frac{125}{4} W\end{aligned}$
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