Physics-
General
Easy
Question
When a resistor of 11 
is connected in series with an electric cell, the current flowing in it is 0.5 A. Instead, when a resistor of 5 is connected to the same electric cell in series, the current increases by 0.4 A. The internal resistance of the cell is
- 1.5
- 2
- 2.5
- 3.5
The correct answer is: 2.5
By using 
Þ 
..…(i)
and 
Þ 
..…(ii)
On solving these equation, we have 
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