During a large power demand, the line voltage is reduced by 5.0%. What is the power output of a lightbulb rated at 100 W when the voltage is normal? (a) 2.5 W (b) 5.0 W (c) 10 W (d) 90 W (e) 95 W
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Why do you use the formula P=(V^2)/R instead of P=IV for this problem?
Given:
The voltage line is reduced by 5%,
Current, or the flow of electric charge, and voltage, or the potential of charge to provide energy, are the two characteristics of electric power. Any combination of current and voltage values can produce a given power.
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