The electric power (P) produced by an electric current (I) passing through a voltage (V) is given by the equation:
[tex]P=VI[/tex]If the battery charger works with a voltage of 12V, replace V = 12V into the equation, as well as the corresponding values for the electric current to find the power produced in each case.
A) I = 10A
Replace V=12V and I=10A to find the power produced in the fast charge mode:
[tex]P=(12V)(10A)=120W[/tex]B) Replace V=12V and I=2A to find the power produced in the trickle charge mode:
[tex]P=(12V)(2A)=24W[/tex]Therefore, the power produced by a 12V battery charger is equal to 120 Watts when it delivers 10A in fast charge mode, and 24 Watts when it delivers 2A in trickle charge mode.
