When a light bulb is connected across the terminals of


When a light bulb is connected across the terminals of abattery, the battery delivers 20.0 W of power to the bulb. Avoltage of 11.6 V exists between the terminals of the battery,which has an internal resistance of 0.500. What is the emf of the battery?

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Physics: When a light bulb is connected across the terminals of
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