Question

A galvanometer coil has a resistance of 15Ω and gives full scale deflection for a current of 4 mA. To convert it to an ammeter of range 0 to 6 A 

(a) 10 mΩ resistance is to be conncected in parallel to the galvanometer 

(b) 10 mΩ resistance is to be connected in series with the galvanometer 

(c) 0.1 Ω resistance is to be connected in parallel to the galvanometer 

(d) 0.1 Ω resistance is to be connected in series with the galvanometer

Answer 1

Correct option: (a) 10 mΩ resistance is to be conncected in parallel to the galvanometer

Explanation:

G = 15Ω, i_g = 4 mA, i = 6 A Required shunt,