// To find Shunt resistance required // Modern Electronic Instrumentation And Measurement Techniques // By Albert D. Helfrick, William D. Cooper // First Edition Second Impression, 2009 // Dorling Kindersly Pvt. Ltd. India // Example 4-1 in Page 56 clear; clc; close; // Given data I_m = 1*(10^-3); //Full scale deflection of the movement in ampere R_m = 100; //Internal resistance of the movement(the coil) in ohm I = 100*(10^-3); //Full scale of the ammeter including the shunt in Ampere //Calculations I_s = I - I_m; // calculating current through shunt R_s = I_m * R_m/ I_s; //calculating shunt to be added printf("The value of the shunt resistance required, R_s = %0.2f ohm",R_s); //Result // The value of the shunt resistance required, R_s = 1.01 ohm