An electrical element X when connected to an alternating voltage source has current through it leading the voltage by `pi//2` radian. Identify X and write an expression for its reactance.

When a circuit element X is conneted across a.c. sourceof emf 220sqrt2V , a current sqrt2 A flows through it and this current is in phase with applied voltage. When another element Y is connected across same a.c. source, the same current flows in the circuit, but it leads the voltages by pi//2. Plot a graph showing variation of net impedance of series combination of X and Y as a function of angular frequency of applied voltage.

When a circuit element X is conneted across a.c. sourceof emf 220sqrt2V , a current sqrt2 A flows through it and this current is in phase with applied voltage. When another element Y is connected across same a.c. source, the same current flows in the circuit, but it leads the voltages by pi//2. Find current that flows in the circuit when series combination of X and Y is connected acorss same a.c. voltage.

When a circuit element X is conneted across a.c. sourceof emf 220sqrt2V , a current sqrt2 A flows through it and this current is in phase with applied voltage. When another element Y is connected across same a.c. source, the same current flows in the circuit, but it leads the voltages by pi//2. Name the circuit elements X and Y.

A device X is connected to an a.c. sourc.e The variation of voltage, current and power in one complete cycle is as shown in the fig. Identify the device X.

A reactive element, in an a.c. circuit, causes the current flowing to lead in phase by pi/2 w.r.t applied voltage. Identify the element in this case.

A reactive element, in an a.c. circuit, causes the current flowing to lag in phase by pi/2 w.r.t applied voltage. Identify the element in this case.

When an electric device X is connected to a 220 volt, 50 hertz a.c. supply, the current is 0.5 amp, and is in same phase as the applied voltage. When another device Y is connected to the same supply, the electric current is again 0.5amp, but it leads the potential difference by pi//2 . When X and Y are connected in serices across the same source, what will be the current ?

Show that in an inductane, the voltage leads the current by pi//2 .

A device 'X' is conneted to an a.c. source. The variation of voltage, current and power in one complete cycle is shown in Fig. Identify the device 'X'. if current is shown by B and voltage by C

A device X is connected to an a.c. sourc.e The variation of voltage, current and power in one complete cycle is as shown in the fig. What is the average power consumption over a cycle?