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Question

Internal resistance of a battery of 2volt terminal voltage is 0.2 ohm and current following through it is 0.5A.So emf of the battery will be:
  1. 1.9V
  2. 3V
  3. 2V
  4. 2.1V

A
3V
B
2V
C
2.1V
D
1.9V
Solution
Verified by Toppr

From the figure,
The voltage drop across the internal resistance,
Vi=ir=0.5×0.2=0.1V
Emf, e=V+Vi
e=2+0.1=2.1V
The correct option is D.




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