Question 227: Current Electricity

Question

An electric bulb of 500 watt at 100 volt is used in a circuit having a 200 V supply. Calculate the resistance R to be connected in series with the bulb so that the power delivered by the bulb is 500 W.

Accepted Answer

500 watt at 100 v
P = Vi
500 = Vi
i = 5 Amp
V = i $$	imes$$ R
R = 20

Answer

20 $$\Omega$$

Answer

30 $$\Omega$$

Answer

5 $$\Omega$$

Answer

10 $$\Omega$$

Current Electricity

An electric bulb of 500 watt at 100 volt is used in a circuit having a 200 V supply. Calculate the resistance R to be connected in series with the bulb so that the power delivered by the bulb is 500 W.

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