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The storage battery of a car has an emf of 12 V. If the internal resistance of the battery

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asked Jan 4, 2018 in Physics by sforrest072 (157,439 points) ● 61 ● 410 ● 941
edited Jan 4, 2018 by sforrest072

The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.4Ω, what is the maximum current that can be drawn from the battery?

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answered Jan 4, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Jan 4, 2018 by sforrest072
 
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Emf of the battery, E = 12 V
Internal resistance of the battery, r = 0.4 Ω
Maximum current drawn from the battery = I
According to Ohm’s law,

The maximum current drawn from the given battery is 30 A.

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