What is the electromotive force, or a measure of current, that establishes a current of one amp through a resistance of one ohm?

A. Ohm
B. Amp
C. Watt
D. Volt


A. Incorrect. Ohms are a measure of resistance in electrical circuits.
B. Incorrect. Amperes, or amps, are a unit of measure of the electrical current flow in an electrical circuit, similar to gallons of water flow in a pipe.
C. Incorrect. A watt is the power consumed by a current of one amp using an electromotive force of one volt.
D. Correct. A volt is the electromotive force, or a measure of current, that establishes a current of one amp through a resistance of one ohm.

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