Which expression represents voltage in terms of current and resistance?

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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

Which expression represents voltage in terms of current and resistance?

Explanation:
This question tests how Ohm’s law relates voltage to current and resistance. Voltage is given by multiplying the current by the resistance, so the expression is E = I × R. This matches the units too: amperes times ohms equals volts (A·Ω = V). The other forms don’t represent voltage in terms of current and resistance: I divided by R would be current per resistance, not voltage; R divided by I would be resistance per current; and multiplying voltage by current corresponds to power, not voltage.

This question tests how Ohm’s law relates voltage to current and resistance. Voltage is given by multiplying the current by the resistance, so the expression is E = I × R. This matches the units too: amperes times ohms equals volts (A·Ω = V).

The other forms don’t represent voltage in terms of current and resistance: I divided by R would be current per resistance, not voltage; R divided by I would be resistance per current; and multiplying voltage by current corresponds to power, not voltage.

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