Current Electricity

Question: If ${R_1}$ and ${R_2}$ are respectively the filament resistances of a 200 watt bulb and 100 watt bulb designed to operate on the same voltage, then

1) ${R_1}$ is two times ${R_2}$

2) ${R_2}$ is two times ${R_1}$

3) ${R_2}$ is four times ${R_1}$

4) ${R_1}$ is four times ${R_2}$

Solution:

Explanation: No Explanation

Heating Effect of Current Electric Power

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