alleryStart learning →Two of the three electric power expressions are restricted because they can be used only for:
ABatteries
BCapacitors
CInductors
DResistors
Answer & Solution
Correct answer: D. Resistors
1. Generality is what separates the three power formulas.
2. Three expressions for electric power are given for circuit work.
3. The first equation is always valid.
4. The other two can be used only for resistors.
5. Applying them to a non-resistive element would be wrong.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 20 'Electric Current, Resistance, and Ohm's Law', sections 20.1-20.7_
Keep practising Electric Current, Resistance, and Ohm's Law
Browse all Electric Current, Resistance, and Ohm's Law questions for AP Physics 2, or explore more Physics topics.
Related questions
Complete the circuit unitsTap what belongs to each current typeTrue or false: current and resistanceWork the current arithmeticMatch each electrical quantityTwo wires of identical shape but different metals carry different currents at the same volA battery supplies a constant voltage, which makes the circuit it drives:Electric energy and electric power are connected by treating power as a rate of: