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A 100-W light bulb is turned on it has an operating voltage of 120 V how much energy is used each second?
Wiki User
∙ 8y ago
A lamp will only operate at its rated power when subject to its rated voltage. So, provided your lamp is operating at its rated voltage (120 V), it's power will be 100 W, which means its consuming energy at the rate of 100 J/s.
At any other voltage, its operating power will change, and the rate at which it consumes energy will change too.
Wiki User
∙ 8y ago
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