A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open circuit and 2.6V when the battery supplies a current of 0.2A through a lamp. The resistance of lamp is
-
A.
2.00(Omega) -
B.
13.00(Omega) -
C.
0.52(Omega) -
D.
0.13(Omega) -
E.
1.50(Omega)
Correct Answer: Option B
Explanation
IR = 2.6 and Ir = 0.4
0.2 x R = 2.6
R = 13.00(Omega)