When the terminals of a cell are connected by a wire of resistance 
, the potential difference across the cell is 
. If a wire of the same resistance is connected in parallel with the first, the potential difference becomes 
. The emf and internal resistance of the cell are respectively
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, 
When a resistance of 
is connected in parallel the resultant resistance
So, 
…… ..(ii)
From Eqs. (i) and (ii), we get
Substituting of 
in Eq. (i), we.get
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