- #1
danne89
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A battery is being charged by a voltage v=11+0.5t V and a constant current of 2 A. The price of a kWh is 10 cent. How much is 5 hours battery-charging?
My work:
p = 22 + t
[tex]w= \int_{0}^{5} x dt = 25/5 + 22*5 = 122.5 W[/tex]
122.5 W in 5 h = 5 * 122.5 Wh = 0.6125 kWh
My work:
p = 22 + t
[tex]w= \int_{0}^{5} x dt = 25/5 + 22*5 = 122.5 W[/tex]
122.5 W in 5 h = 5 * 122.5 Wh = 0.6125 kWh