alleryStart learning →Electric power delivered to a device is the product of which two quantities?
ACharge times voltage
BVoltage divided by current
CCurrent times resistance
DCurrent times voltage
Answer & Solution
Correct answer: D. Current times voltage
1. Electrical energy moved is charge times voltage, written PE = q V.
2. Power is energy per unit time, so P = q V / t.
3. Since current is I = q / t, this collapses to P = I V.
4. Charge times voltage is energy in joules rather than power in watts, so it answers a different question.
_Source: OpenStax College Physics (CC BY 4.0), Ch 20 "Electric Current, Resistance, and Ohm's Law", section Power in Electric Circuits_
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