Which unit is used to measure resistance?

Prepare for the Florida Certified Clinical Electrologist Exam. Study with flashcards and multiple-choice questions with hints and explanations. Boost your confidence and get ready for your certification!

Multiple Choice

Which unit is used to measure resistance?

Explanation:
Resistance is what opposes the flow of electric current. The unit used to express how much resistance a component has is the ohm, defined as one volt per ampere. This means when you know the voltage and the current, you can calculate resistance with ohm’s law, R = V / I. Amps measure current, volts measure electrical pressure, and watts measure power, so only the ohm describes resistance. The concept helps explain why a component limits current: higher resistance means less current for a given voltage.

Resistance is what opposes the flow of electric current. The unit used to express how much resistance a component has is the ohm, defined as one volt per ampere. This means when you know the voltage and the current, you can calculate resistance with ohm’s law, R = V / I. Amps measure current, volts measure electrical pressure, and watts measure power, so only the ohm describes resistance. The concept helps explain why a component limits current: higher resistance means less current for a given voltage.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy