In a simple meter bridge circuit, the both gaps are bridge by coils 
and 
having the smaller resistance. A balance is obtained when the jockey key makes contact at a point of the bridge wire 40 cm from the 
end. On shunting the coil 
with a resistance of 
the balance point is moved through 10 cm. What are the resistances of 
and 
?
A
respectively
B
respectively C
respectively
D
respectively
Text Solution
Verified by ExpertsThe correct answer is:
B
Initially, jockey key at 40 cm from 
end i.e. 
from 
end.
…… ..(i)
Now, 
is shunted with 
.
New resistance, 
and new balance point is moved by 10 cm.
Hence, 
From Eq. (i),
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