-A moving coil, to which the meter pointer is attached, is suspended between two field coils and connected in series with these coils.
-The three coils (two field coils and the moving coil) are connected in series across the meter terminals so that the same current flows through each.
-Current flow in either direction through the three coils generates a magnetic field between the field coils.
-Current flow through the fixed coils set up a magnetic field in one direction while the current flow through the moving coil set up an opposing magnetic field.
-When two magnetic fields opposing each other, the pointer deflects to the right.