Which unit is used to measure electrical resistance?

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Multiple Choice

Which unit is used to measure electrical resistance?

Explanation:
Resistance is the opposition to current flow, and its unit is the ohm (Ω). This unit comes from Ohm’s law, which ties voltage (V), current (I), and resistance (R) together: V = I × R, so R = V / I. That means the amount of resistance is what you’d get if you divide the voltage by the current. The other units measure different quantities: volts measure electrical potential, amperes measure current, and watts measure power. For example, applying 8 volts across a 4-ohm resistor yields a current of 2 amperes, since I = V / R = 8 / 4 = 2 A.

Resistance is the opposition to current flow, and its unit is the ohm (Ω). This unit comes from Ohm’s law, which ties voltage (V), current (I), and resistance (R) together: V = I × R, so R = V / I. That means the amount of resistance is what you’d get if you divide the voltage by the current. The other units measure different quantities: volts measure electrical potential, amperes measure current, and watts measure power. For example, applying 8 volts across a 4-ohm resistor yields a current of 2 amperes, since I = V / R = 8 / 4 = 2 A.

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