What is the measurement of resistance to current flow?

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Multiple Choice

What is the measurement of resistance to current flow?

Explanation:
Resistance measures how strongly a component or material opposes the flow of electric current. The unit for that opposition is the ohm, symbolized by the omega. Ohm’s law connects these ideas: V = IR, so resistance equals voltage divided by current (R = V / I). If you know the voltage and the current, you can calculate the resistance. In practice, you’d use an ohmmeter to measure resistance in a circuit or piece of equipment. The other units describe different quantities—amperes for current, volts for voltage, and watts for power—so they don’t measure resistance.

Resistance measures how strongly a component or material opposes the flow of electric current. The unit for that opposition is the ohm, symbolized by the omega. Ohm’s law connects these ideas: V = IR, so resistance equals voltage divided by current (R = V / I). If you know the voltage and the current, you can calculate the resistance. In practice, you’d use an ohmmeter to measure resistance in a circuit or piece of equipment. The other units describe different quantities—amperes for current, volts for voltage, and watts for power—so they don’t measure resistance.

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