Urgent help needed in number four.
Thank you in advance!

The energy produced by the headlamp at the end of 5 minutes is determined as 1,440 J.
The energy supplied by the lamp is calculated as follows;
E = Pt
E = IVt
where;
E = 0.4 x 12 x 300
E = 1,440 J
Thus, the energy produced by the headlamp at the end of 5 minutes is determined as 1,440 J.
Learn more about energy here: https://brainly.com/question/25959744
#SPJ1