Which of the following describes resistance in an electrical circuit?

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Multiple Choice

Which of the following describes resistance in an electrical circuit?

Explanation:
Resistance describes the opposition to the flow of electric current in a circuit. It’s a property that determines how easily electrons can move; for a given voltage, higher resistance means less current, and this relationship is described by Ohm’s law: I = V / R. Doubling the resistance while keeping voltage the same cuts the current in half, while raising the voltage or lowering the resistance increases current. This concept is different from power—the rate of energy transfer—, the unit of current (ampere), and the source of EMF (the driving voltage). So describing resistance as opposition to current flow best captures what it does in a circuit.

Resistance describes the opposition to the flow of electric current in a circuit. It’s a property that determines how easily electrons can move; for a given voltage, higher resistance means less current, and this relationship is described by Ohm’s law: I = V / R. Doubling the resistance while keeping voltage the same cuts the current in half, while raising the voltage or lowering the resistance increases current. This concept is different from power—the rate of energy transfer—, the unit of current (ampere), and the source of EMF (the driving voltage). So describing resistance as opposition to current flow best captures what it does in a circuit.

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