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5 votes
A cell phone charger uses 5.6 Joules of energy per second when plugged

into an outlet but only 1.7 Joules of energy per second actually end up in
the cell phone battery. What is the efficiency of the charger?

1.) 30%

2.) 3.29%

3.) 329%

4.) 9.59%

1 Answer

1 vote

Answer:

3 because it is............

User Garry Taylor
by
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