The inductor has an inductance of 0.5 is connected to 50 hertz ac source, what is the inductive reactance of the inductor?
Correct answer: C. 157
- A. 94.2
- B. 1.57
- C. 157
- D. 9,421
Explanation
Inductive reactance is the opposition offered by the inductor in the AC circuit to the flow of AC current. Inductive reactance= = wL = 2pifL = 2*3.14*50*0.5= = 157 ohm
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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