If a light bulb has half the resistance of a 100-W lightbulb,what would be its wattage? Assume both bulbs are attached to the same 120-V circuit.
A)200 W
B)50 W
C)25 W
D)More information is needed.

Question

Quizplus · Accepted Answer

The power (wattage) of a bulb is given by P = V^2/R. If the resistance is halved, the power will double, so a bulb with half the resistance of a 100-W bulb will have a wattage of 200 W.

If a Light Bulb Has Half the Resistance of a 100-W