Current Electricity Charging Discharging Of Capacitors Question 612

Question: A current of two amperes is flowing through a cell of e.m.f. 5 volts and internal resistance 0.5 ohm from negative to positive electrode. If the potential of negative electrode is 10V, the potential of positive electrode will be

[MP PMT 1997]

Options:

A) 5 V

B) 14 V

C) 15 V

D) 16 V

Show Answer

Answer:

Correct Answer: B

Solution:

$ V _{2}-V _{1}=E-ir=5-2\times 0.5=4volt $

Therefore $ V _{2}=4+V _{1}=4+10=14,volt $