The terminal voltage of a battery is 4.0V when supplying a current of 2.0A, and 2.0V when supplying a current of 3.0A. The internal resistance of the battery is
-
A.
0.5 (Omega) -
B.
1.0(Omega) -
C.
2.0(Omega) -
D.
4.0(Omega)
Correct Answer: Option C
Explanation
E = 4 + 2r and E = 2 + 3r
therefore, r = 2(Omega)