A galvanometer of resistance `100 Omega` gives full-scale defletion for a current of `10muA`. Find the resistance needed to convert it to an ammeter of range 1A.

A galvanometer of resistance 50 Omega gives full-scale deflection for a current of 0.25 A. Calculate the required resistance to convert the galvanometer into an, ammeter of range 5 A.

A galvanometer coil has a resistance of 15 ohm and the meter shows full scale deflection for a current of 4 mA. How will you convert it to an ammeter of range 6A?