Current Electricity Charging Discharging Of Capacitors Question 109
Question: An electric bulb rated for 500 watts at 100 volts is used in a circuit having a 200-volt supply. The resistance R that must be put in series with the bulb, so that the bulb draws 500 W is
Options:
A) $ 10,\Omega $
B) $ 20,\Omega $
C) Rated current through the circuit $ i=\frac{500}{100}=5A $ Potential difference across R, $ 100=5\times R,\Rightarrow ,R=20,\Omega $
D) $ 50,\Omega $
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Answer:
Correct Answer: D
Solution:
$ 100,\Omega $
BETA
