If the galvanometer current is 10 mA , the resistance of the galvanometer is $40 \Omega$ and shunt o

Question

If the galvanometer current is 10 mA , the resistance of the galvanometer is $40 \Omega$ and shunt of $2 \Omega$ is connected to the galvanometer, the maximum current which can be measured by this ammeter is

Professor PC Thomas Classes · Answer

Using $I_g G = (I - I_g) S$, rearranging for required variables provides the shunt balance yielding the key's value.