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Physics, 21.08.2019 18:30 sevanah5506

When a new 9.0 v battery is connect to a torch, the power emitted by the bulb is 6.0 w. after the battery has run-down somewhat, the internal resistance of the run- down battery is 7.4 Ļ‰, what is the power emitted by the bulb now? (you should assume that the resistance of the bulb is independent of the current flowing through it.)

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