calculate the headlamp? Really?
P = EI = 0.4 * 12 = 4.8W
4.8W * 5min = 24 W-min
convert that to the units of your choice, noting that 1W = 1J/s
Calculate the headlamp of a car which takes the current of 0.4 ampere from a 12 volt the energy produced in 5 minutes is
1 answer