If voltage increases while resistance remains constant, what happens to current?

Study for the Burglar and Residential Fire Alarm Test. Prepare with a variety of questions, explanations, and valuable hints. Gain confidence and readiness for your exam journey!

Multiple Choice

If voltage increases while resistance remains constant, what happens to current?

Explanation:
Current through a circuit with fixed resistance follows Ohm's law: I = V / R. When resistance stays the same and voltage increases, the current increases in direct proportion to the voltage. Doubling the voltage doubles the current; tripling the voltage triples the current. So the current goes up. The other options don’t fit because keeping current the same would require a change in resistance to offset the voltage, and fluctuating would imply unstable conditions—neither occurs when voltage rises while resistance remains constant.

Current through a circuit with fixed resistance follows Ohm's law: I = V / R. When resistance stays the same and voltage increases, the current increases in direct proportion to the voltage. Doubling the voltage doubles the current; tripling the voltage triples the current. So the current goes up. The other options don’t fit because keeping current the same would require a change in resistance to offset the voltage, and fluctuating would imply unstable conditions—neither occurs when voltage rises while resistance remains constant.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy