circuit has a section 
as shown in figure. If the potentials at points 
and 
are 
and 
respectively. The potential at point O is
A
B
C
Zero
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Applying junction rule to O
i.e., 
…(i)
Let, 
be the potential at point O.
By Ohm’s law for resistances 
and 
respectively, we get
and, 
or 
So substituting these values of 
and 
in eqn. (i), we get,
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