For a cell terminal potential difference is 
when circuit is open and reduces to 1. 
when cell is connected to a resistance of 
. Determine internal resistance of cell (r)
Text Solution
Verified by ExpertsThe correct answer is:
A
Terminal potential difference is 2.2 V when circuit is open.
e.m.f. of the cell 
volt
Now, when the cell is connected to the external resistance, circuit current 
is given by
ampere, where 
is the internal resistance of the cell.
Potential difference across the cell 
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