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

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Study for the AAMI Certified Associate in Biomedical Technology Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

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

Explanation:
Ohm's law shows that voltage equals current times resistance (V = IR). If the resistance stays the same and the current doubles, the voltage must double as well, since V is directly proportional to I when R is fixed. For example, with R = 10 Ω, increasing I from 1 A to 2 A raises V from 10 V to 20 V. You can also see this through power: P = VI = I^2R, so doubling the current with the same resistance makes power rise to four times, which aligns with the larger voltage and current. Therefore, the voltage doubles.

Ohm's law shows that voltage equals current times resistance (V = IR). If the resistance stays the same and the current doubles, the voltage must double as well, since V is directly proportional to I when R is fixed. For example, with R = 10 Ω, increasing I from 1 A to 2 A raises V from 10 V to 20 V. You can also see this through power: P = VI = I^2R, so doubling the current with the same resistance makes power rise to four times, which aligns with the larger voltage and current. Therefore, the voltage doubles.

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