<p>When an alternating voltage of 220 V is applied across a device X, a current of 0.5A flows through the circuit and is in phase with the applied voltage. When the some voltage is applied across another device Y the same current flows through the circuit but it leads the applied voltage by&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">&#960;</mi></math>/2 radian. (i) Name the devices X and Y. (ii) Calculate the current flowing in the circuit, when same voltage is applied across the series combination of X and Y.</p>