- #1
mr_coffee
- 1,629
- 1
Hello everyone! I am stuck on this simple problem...
A car battery with a 12 V emf and an internal resistance of 0.050 is being charged with a current of 60 A.
(a) What is the potential difference V across its terminals?
wrong check mark V
(b) What is the rate Pr of energy dissipation inside the battery?
W
(c) At what rate is electrical energy being converted to chemical energy?
W
(d) When the battery is used to supply 60 A to the starter motor, what is V?
V
(e) What is Pr in this case?
W
I found the V = 9V;
I drew the simple circuit then Used
Vb-Va = E-Ir;
V = 12v -60*.050 = 9V, but it was wrong, any ideas? thanks
A car battery with a 12 V emf and an internal resistance of 0.050 is being charged with a current of 60 A.
(a) What is the potential difference V across its terminals?
wrong check mark V
(b) What is the rate Pr of energy dissipation inside the battery?
W
(c) At what rate is electrical energy being converted to chemical energy?
W
(d) When the battery is used to supply 60 A to the starter motor, what is V?
V
(e) What is Pr in this case?
W
I found the V = 9V;
I drew the simple circuit then Used
Vb-Va = E-Ir;
V = 12v -60*.050 = 9V, but it was wrong, any ideas? thanks