2) Moving-coil meters
again the model can be used to understand the effects of increasing levels of damping.
the picture shows no damping case b = 0
the picture shows light damping case b = 0.1
the picture shows critically damping case b = 2.0
Thus, a pointer is critically damped to allow it to move to the correct position immediately whenever a current flows through it or a voltage is applied across it.
the picture shows heavy damping case b = 5.0