If the voltage across a resistor doubles while the resistance remains the same, what happens to the current?

Enhance your study skills for the GMAS Physical Science Test with detailed questions and hints. Utilize our flashcards and multiple choice format for effective learning, and gear up for success!

Multiple Choice

If the voltage across a resistor doubles while the resistance remains the same, what happens to the current?

Explanation:
Current through a resistor depends on the voltage across it according to Ohm's law: I = V/R. If the resistance stays the same, the current changes directly with the voltage. So doubling the voltage while keeping R constant makes the current double as well, since I = (2V)/R = 2(V/R). For example, with R = 10 Ω, increasing voltage from 5 V to 10 V changes current from 0.5 A to 1 A. Therefore, the current doubles.

Current through a resistor depends on the voltage across it according to Ohm's law: I = V/R. If the resistance stays the same, the current changes directly with the voltage. So doubling the voltage while keeping R constant makes the current double as well, since I = (2V)/R = 2(V/R). For example, with R = 10 Ω, increasing voltage from 5 V to 10 V changes current from 0.5 A to 1 A. Therefore, the current doubles.

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