Question
Physics Question on Resistance
If one cell is connected wrongly in a series combination of four cells each of e.m.f. 1.5 V and internal resistance of 0.5 Ω, then the equivalent internal resistance of the combination is
A
0.5Ω
B
1 Ω
C
1.5Ω
D
2Ω
E
2.5 Ω
Answer
2Ω
Explanation
Solution
The correct option is (D) : 2Ω