Question

measure the resistance and impedance of and inductor in a given circuit​

Answer 1

Procedure

Measurement of resistance:

Make circuit as shown in circuit diagram (figure (a) and figure (6)) and determine resistance applying Ohm’s law.

Measurement of impedance without iron core:

Make circuit as shown in circuit diagram (figure (c) and figure (d)). The variac (variable output A.C. source) is connected to A.C. Mains, A.C. ammeter and A.C. voltmeter are used for measuring A.C. current and voltage.

The circuit will obey Ohm’s law. The ratio of the voltmeter reading to the corresponding ammeter reading will give the impedance of the inductor (without iron core).

Measurement of impedance with iron core:

Now insert the iron core inside the hollow cylindrical asbestos core of the inductor. Repeat the above steps to find the impedance of the inductor with iron core.

Circuit diagram

to-measure-the-resistance-and-impedance-of-an-inductor-with-or-without-iron-coreto-measure-the-resistance-and-impedance-of-an-inductor-with-or-without-iron-core-1

to-measure-the-resistance-and-impedance-of-an-inductor-with-or-without-iron-coreto-measure-the-resistance-and-impedance-of-an-inductor-with-or-without-iron-core-2