Calculate Coulomb

1. The problem statement, all variables and given/known data

The engine delivers 12 kW. Per second it can shift the m = 800 kg car over a vertical distance of 1.5 m. Find the current delivered by the batteries.

2. Relevant equations

P = U * I
I = P/U = 12 000 W / 168 V = 71.4 A

3. The attempt at a solution

My Problem is: I don’t really know how to calculate V…
I know that V = J/C and Js = 12 000, but I don’t know how to find out the Coulomb.
Can please someone help?

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