A 60 watt, 120 volt light bulb is designed to operate at a 1/2 A current. If you screw this bulb into a fixture that is powered by very long thin wires it will glow more dimly than intended because the voltage drop across the bulb will be
A) less than 120 V and the current through the bulb will be less than 1/2 A.
B) 120 V, but the current through the bulb will be less than 1/2 A.
C) 120 V and the current through the bulb will be 1/2 A.
D) less than 120 V, but the current will still be 1/2 A.

Question

Quizplus · Accepted Answer

Long, thin wires have higher resistance, which causes a voltage drop before the current reaches the bulb. This results in both a lower voltage across the bulb and a lower current through it than designed.

A 60 Watt, 120 Volt Light Bulb Is Designed to Operate