In a flashlight bulb, the brightness of the light bulb is a direct indication of
A) electric current through it.
B) number of electrons in the circuit.
C) amount of life left in the battery.
D) mass of the electron

Question

Quizplus · Accepted Answer

The brightness of a flashlight bulb is directly related to the electric current flowing through it. More current results in a brighter light, as it indicates a higher rate of charge flow, which increases the energy available for light production. The number of electrons, the amount of life left in the battery, and the mass of the electron do not directly indicate the brightness of the bulb.

In a Flashlight Bulb, the Brightness of the Light Bulb