Measure the resistance and impedance of an inductor in a given circuit.
Answers
Explanation:
Measurement of impedance without iron core:
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).
Impedance is computed by dividing a circuit's voltage by its current.
In a nutshell, impedance is a property that restricts the passage of current in an AC circuit. The sign "Z" denotes impedance, which is measured in ohms , the same unit as DC resistance. An perfect inductor has zero resistance. For all frequencies and inductance values, the reactance of the an ideal inductor, and hence its impedance, is positive. An inductor's total impedance (absolute value) is proportional to its frequency, and for ideal inductors, it always rises with frequency.