The resistance of an ammeter is 13 
and its scale is graduated for a current upto 100 amps. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 amperes by this meter. The value of shunt‐resistance is
A
2 
B
0.2 
C
2 
D
20 
.
.
Text Solution
Verified by ExpertsThe correct answer is:
A
Let the shunt resistance be 
Given: 
From the figure,
Or 
or 
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