In each circuit described next, an ac voltage source producing a current i = I cos wt is connected to an additional circuit element.
(a) The ac source is connected across a resistor R. Sketch graphs of the current in the circuit and the potential difference across the resistor as functions of time, covering two cycles of oscillation. Put both graphs on the same set of axes so you can compare them.
(b) Do the same as in part (a), except suppose the resistor is replaced by an inductor L. Sketch the same graphs as in part (a), but this time across the inductor instead of the resistor.
(c) Do the same as in part (a), except suppose the resistor is replaced by a capacitor C. Sketch the same graphs as in part (a), except now across the capacitor instead of the resistor.
(d) Sketch phasor diagrams for each of the preceding cases.