Multiple Choice
Which unit is most commonly used to measure electrical power?
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9. Work & Energy
Power
Struggling with Physics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the power produced by a light bulb with a voltage of and a current of ?
A
B
C
D
Verified step by step guidance1
Identify the given quantities: voltage \(V = 120\ \text{V}\) and current \(I = 0.045\ \text{A}\).
Recall the formula for electrical power, which relates power, voltage, and current: \(P = V \times I\).
Substitute the given values into the formula: \(P = 120 \times 0.045\).
Multiply the voltage and current to find the power produced by the light bulb.
Express the result in watts (W), which is the standard unit of power.
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