Two cells of unequal emfs ε 1 and ε 2 , and internal resistances r 1 and r 2 are joined as shown. V A and V B are the potentials at A and B respectively.
A
One cell will supply energy to the other
B
The potential difference across both the cells will be equal
C
The potential difference across one cell will be greater than its emf.
D
V A - V B = 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b, c, d)
V A – V B = E eq = 
= 
If ε 1 > ε 2 source ε 1 act as a source and ε 2 act as a load.
and V 1 = ε 1 – ir 1
V 2 = ε 2 + ir 2
V 1 = V 2 as (i = 
for ε 1 > ε 2
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