When a circuit element X is connected across an a.c. source, a current of √2A flows through it and this current is in phase with the applied voltage. When another element Y is connected across the same a.c. source, the same current flows in the circuit but it leads the voltage by /2 radians.(i) Name the circuit elements X and Y. (ii) Find the current that flows in the circuit when the series combination of X and Y is connected across the same a.c. voltage.