Question
A student builds a circuit that lights a lightbulb . A second bulb is added to the same lop between the first bulb and the battery. Which statement describes the brightness of each bulb?
*
1 point
Each bulb will be as bright as the first bulb was.
The first bulb will be the same brightness, and the second bulb will be dimmer.
Each bulb will be dimmer than the first bulb was.
The first bulb will be dimmer than it was, and the second bulb will not light.
*
1 point
Each bulb will be as bright as the first bulb was.
The first bulb will be the same brightness, and the second bulb will be dimmer.
Each bulb will be dimmer than the first bulb was.
The first bulb will be dimmer than it was, and the second bulb will not light.
Answers
GPT-4o mini
When a second light bulb is added to the same loop in a circuit (assumed to be in series with the first bulb), the total resistance of the circuit increases. This results in a decrease in the overall current flowing through the circuit. Since the brightness of a bulb is directly related to the current passing through it, both bulbs will be dimmer than the first bulb was when it was alone in the circuit.
Thus, the correct statement is: **Each bulb will be dimmer than the first bulb was.**
Thus, the correct statement is: **Each bulb will be dimmer than the first bulb was.**