Can someone pleeeease help (even if you can only do one question):
A battery has 6V:
a) how many coulombs if charge would need to flow for the cell to deliver 72 joules of energy
b) what current must flow through the cell if the energy must be delivered in 5 seconds
And can someone explain how the answers worked out, thank you
how much charge would need to flow...?
2012-11-17 3:36 pm
回答 (1)
2012-11-17 3:41 pm
✔ 最佳答案
6 volts is 6 joules per coulomb.dimensional analysis
72 J / (6 J/C) = 12 C (a)
1 amp is 1 coulomb per second
12 C / 5s = 2.4 J/s = 2.4 amps (b)
收錄日期: 2021-04-20 20:46:38
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