A galvanometer has a resistance 
and a current 
flowing in it produces full scale deflection. 
is the value of the shunt which converts it into an ammeter of range 0 to I and 
is the value of the shunt for the range 0 to 2 I . The ratio 
is :
A
B
C
2
D
1
Text Solution
Verified by ExpertsThe correct answer is:
A
given : 
is value of shunt for O to I
is value of shunt for O to 21
hence 
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