... with an electrical system. In theelectrical case the currentis the ratio of the applied voltage to the complex circuit impedance. In this instance, if the velocity isidentified with electrical ... have a resistance in series with an ideal inductor. The presence of theseries resistor has the effect of moving the poles of H(s)away from the j axis, thereby preventing the transfer function ... polyno-mials. The roots of the numerator polynomial arecalled the zerosof H(s), and those of thedenomina-tor are called thepoles of H(s ). The key relationshipis that the location of the poles...