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Problem 8: The full scale deflection for a galvanometer is 10 mA. Its resistance is 100 Ω. How it can be converted into an ammeter of range 100 A.

Solution

Given data               Ig = 10 mA                      Rg = 100 ohm                     I = 100 A

Required                   Rs =?

Strategy: The ratio of the shunt resistance to galvanometer resistance is given by

Put the values

 

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