What is the unit used for electrical resistance?

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Enhance your understanding of the fundamentals of electricity with the AMT General Exam. Study with multiple-choice questions crafted to improve your knowledge and confidence. Prepare effectively for your success!

Multiple Choice

What is the unit used for electrical resistance?

Explanation:
Resistance is measured in ohms. The ohm is the unit that expresses how strongly a component resists current flow. By definition, one ohm is the resistance between two points of a conductor when a constant potential difference of one volt, applied to these points, produces a current of one ampere, so R = V / I. This ties directly into Ohm’s law, linking voltage, current, and resistance. The volt is the unit of electrical potential difference, the ampere is the unit of current, and the watt is the unit of electrical power, which is why they’re not used for resistance.

Resistance is measured in ohms. The ohm is the unit that expresses how strongly a component resists current flow. By definition, one ohm is the resistance between two points of a conductor when a constant potential difference of one volt, applied to these points, produces a current of one ampere, so R = V / I. This ties directly into Ohm’s law, linking voltage, current, and resistance. The volt is the unit of electrical potential difference, the ampere is the unit of current, and the watt is the unit of electrical power, which is why they’re not used for resistance.

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