1 1 vote The first and the last critical frequencies (singularities) of a driving point impedance function of a passive network having two kinds of elements, are a pole and a zero respectively. The above property will be satisfied by $\text{RL}$ network only $\text{RC}$ network only $\text{LC}$ network only $\mathrm{RC}$ as well as $\mathrm{RL}$ networks Network Solution Methods gate2006-ec circuit-analysis network-solution-methods + – admin 850 views answer comment Share Follow Add Sync Questions Print 0 reply Please log in or register to add a comment.