Question

A galvanometer having a vo resistance of 100 ohm givds full scale deflection when a curent of 1 ma is passed through it calculate the value of resistance required to convert into ammeter of range of 1a

Answer 1

Maximum voltage that can be applied across the galvanometer coil =100Ω×10−3A=0.1V. If RS is the shunt resistance :

Rs×10A=0.1V

Rs=0.01Ω