**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?

http://ift.tt/1fizjKP