An electric car is being designed to have an average power output of 6,400 W for 2 h before needing to be recharged. (Assume there is no wasted energy.) (a) How much energy would be stored in the charged batteries?  J(b) The batteries operate on 80 V. What would the current be when they are operating at 6,400 W?  A(c) To be able to recharge the batteries in 1 h, how much power would have to be supplied to them?  W

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Chapter22: Electric Current
Section22.2: Using Electric Energy
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An electric car is being designed to have an average power output of 6,400 W for 2 h before needing to be recharged. (Assume there is no wasted energy.)

(a) How much energy would be stored in the charged batteries?
  J

(b) The batteries operate on 80 V. What would the current be when they are operating at 6,400 W?
  A

(c) To be able to recharge the batteries in 1 h, how much power would have to be supplied to them?
  W
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