Question

A wattage rating of a lightbulb is the power it consumers when it is connected across a 120 V potential difference. How does the resistance of a 60 W light bulb compare to that of a 100 W light bulb?

A. The 100 W bulb has the same resistance
B. The 100 W bulb has more resistance
C. The 100 W bulb has less resistance

Answer 1

The answer is C.

120 V with 60 W light bulb is 240 ohms.

120 V with 100 W light bulb is 144 ohms.

The 100 W bulb has less resistance :)