A ring is made of a wire having a resistance 
. Find the points A and B as shown in the figure, at which a current carrying conductor should be connected so that the resistance R of the sub-circuit between these points is equal to 
.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Resistance of wire, 
,
Let l 1 and l 2 be the lengths of the wires having resistances R 1 and R 2
Here, 
… (i)
and 
and R 2 are in parallel 
Putting, 
in above equation, we get
… (ii)
After solving Eqs. (i) and (ii), we get 
and 
Hence, 
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