Question

What power (in kW) is supplied to the starter motor of a large truck that draws 240 A of current from a 22.5 V battery hookup?

Answer 1

Let's name some variables:

I: current; I = 240A

V: voltage; V = 22.5V

P: power; this is what we need to solve for

Given these variables, we can use the following equation to find P:

P = IV

Now, plugging in the known variables,

P = 240*22.5

P = 5400W = 5.4kW