What is the SI unit of resistance?

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Prepare for the Abeka Science Matter and Energy Test 7. Utilize flashcards and multiple choice questions with detailed explanations to boost your comprehension and succeed in your exam!

Multiple Choice

What is the SI unit of resistance?

Explanation:
Resistance is the opposition to electric current. The SI unit for resistance is the ohm. This comes from Ohm’s law, which says V = I R. Rearranging gives R = V / I, so the unit for resistance is volts per ampere. Since one ohm is defined as one volt per one ampere, that is the standard unit. The other common electrical units—volt for potential difference, ampere for current, and watt for power—are not units of resistance, but relate to resistance through Ohm’s law and power calculations.

Resistance is the opposition to electric current. The SI unit for resistance is the ohm. This comes from Ohm’s law, which says V = I R. Rearranging gives R = V / I, so the unit for resistance is volts per ampere. Since one ohm is defined as one volt per one ampere, that is the standard unit. The other common electrical units—volt for potential difference, ampere for current, and watt for power—are not units of resistance, but relate to resistance through Ohm’s law and power calculations.

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