How do I find the maximum number of divisions in a galvanome

How do I find the maximum number of divisions in a galvanometer knowing only loop area, magnet strength, and the maximum divisions for a few loop numbers found on a smaller scale?

For example, I have runs with a set loop area of 10 and magnetic strength of 10. The maximum divisions are

1 loop: 2 divisions, 2 loops: 5 divisions, 3 loops: 7.5 divisions.

Solution

A galvanometer is an electromechanical instrument for detecting and measuring electric current. The most common use of galvanometers was as analog measuring instruments, called ammeters, used to measure the direct current (flow of electric charge) through an electric circuit. A galvanometer works as an actuator, by producing a rotary deflection (of a \"pointer\"), in response to electric current flowing through a coil in a constant magnetic field.

S=IgIIgGS=IgIIgG

A pointer attached to coil deflects 15 divisions for a current of 38µa. What is the current sensitivity (K) of this instrument?

k =38 x 20 / 15
k = 50.6 uA
amount of current for full defecting