The voltage and current waveforms for an element are shown in Figure. The circuit element is .......... and its value is .........

For the two port network shown in Fig. the admittance matrix is

Energy stored in a capacitor over a cycle, when excited by an $$a.c.$$ source is

For the circuit shown in Fig, the Norton equivalent source current value is _________ $$A$$ and its resistance is ___________ $$Ohms$$