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exis [7]
3 years ago
11

A battery charger is connected to a dead battery and delivers a current of 3.5 a for 4 hours, keeping the voltage across the bat

tery terminals at 16 v in the process. how much energy is delivered to the battery?
Physics
1 answer:
oksano4ka [1.4K]3 years ago
5 0
The power delivered is equal to the product between the voltage V and the current I:
P=VI=(16 V)(3.5 A)=56 W

This power is delivered for a total time of t=4h=4 \cdot 3600 s = 14400 s, so the total energy delivered to the battery is
E=Pt = (56 W)(14400 s)=806400 J=806.4 kJ
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