Five cells, each with an e.m.f. of 2V and internal resistance of 0.5Ω are connected in series. The resulting battery will have
A. An e.m.f. of 2V and an internal resistance of 0.5 Ω
B. An e.m.f. of 10V and an internal resistance of 2.5 Ω
C. An e.m.f. of 2V and an internal resistance of 0.1 Ω
D. An e.m.f. of 10V and an internal resistance of 0.1 Ω
Answer:B
Five cells, each with an e.m.f. of 2V and internal resistance of 0.5Ω are connected in series. The resulting battery will have
A. An e.m.f. of 2V and an internal resistance of 0.5 Ω B. An e.m.f. of 10V and an internal resistance of 2.5 Ω C. An e.m.f. of 2V and an internal resistance of 0.1 Ω D. An e.m.f. of 10V and an internal resistance of 0.1 Ω