A 12V car battery puts out 5400J of energy each second. How many coulombs of charge does this battery put out in one second?
power in watts = i V = Joules/second = 5400
so i = 5400/12 = 450 amps = 450 coulombs/second
This is just a question about definition of units.
To find the number of coulombs of charge that the battery puts out in one second, we need to use the formula:
Energy (in joules) = Voltage (in volts) * Charge (in coulombs)
Rearranging the formula, we have:
Charge (in coulombs) = Energy (in joules) / Voltage (in volts)
In this case, the energy is given as 5400J and the voltage is 12V, so we can substitute these values into the formula:
Charge (in coulombs) = 5400J / 12V
Calculating this, we find:
Charge (in coulombs) ≈ 450C
Therefore, the battery puts out approximately 450 coulombs of charge in one second.