Use Figure and show that the internal resistance, Ri, of an ammeter is Rsh || Rg. Calculat...

Use Figure and show that the internal resistance, Ri, of an ammeter is Rsh || Rg. Calculate Ri given Rg = 1 Ω and Rsh = 1 kΩ and compare it with Rg. In this exercise, you will find that Ri will be very small because Rsh || Rg < Rg; and Rg itself is usually very small.

FIGURE (a) Ammeter circuit;