Current Electricity Charging Discharging Of Capacitors Question 475

Question: Two bulbs are in parallel and they together consume 48 W from a battery of 6 V. The resistance of each bulb is

Options:

A) $ 0.67,\Omega $

B) $ 3.0,\Omega $

C) $ 4.0,\Omega $

D) $ 1.5,\Omega $

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Answer:

Correct Answer: D

Solution:

The bulbs are connected in parallel, hence each bulb consumes $ \frac{48}{2}=24,W. $

Therefore $ \frac{V^{2}}{R}=24, $

Therefore $ R=\frac{6\times 6}{24}=1.5,\Omega $