Question

Derive an expression for the impedance of an a.c. circuit consisting of an inductor and a resistor​

Answer 1

The opposition to current flow through an AC Inductor is called Inductive Reactance and which depends lineally on the supply frequency

Inductors and chokes are basically coils or loops of wire that are either wound around a hollow tube former (air cored) or wound around some ferromagnetic material (iron cored) to increase their inductive value called inductance.

Answer 2

Answer:

Let a circuit contain a resistor of resistance R and an inductor of inductance L connected in series.

The applied voltage is V=V

0

sinωt.

Suppose the voltage across resistor V

R

and that across inductor is V

L

.

The voltage V

R

and current I are in the same phase, while the voltage V

L

leads the current by an angle

2

π

. Thus, V

R

and V

I

are mutually perpendicular.