In a circuit containing an inductance of zero resistance, the current leads the applied a.c. voltage by a phase angle at

In a circuit containing an inductance of zero resistance, the e.m.f. of the applied ac voltage leads the current by

In a circuit containing an inductance of zero resistances, the e.m.f of the applied AC voltage leads the current by

In an a.c. circuit containing an inductor of zero resistance, the emf of the applied A.C. voltage leads the current by ………

The current in a circuit containing a capacitance C and a resistance R in series leads over the applied voltage of frequency omega/(2pi) by.

The current in a circuit containing a capacitance C and a resistance R in series leads over the applied voltage of frequency omega/(2pi) by.

Show mathematically that in an a.c. circuit only containing capacitance, the current leads e.m.f by a phase angle pi/2 .