Question

What is the relation between reactance, resistance and impedance? a) Z=R+jX b) Z=R+X c) Z=R-X d) Z=R-jX​

Answer 1

Answer- Resistance and reactence are the properties of an electrical ciruit that opposes the current the main difference between reactance and resistance is that resis ance measures the opposition to flow of current , whereas reactance measures the opposition of change in current

Answer 2

OPTION (a) IS CORRECT.

(a) $Z=R+jK$

Explanation:

• Impedance is the resisting shown to the flow of DC and AC current.
• The vector addition of Reactance and Resistance gives the impedance.
• The reactance is the resisting of A.C current through inductor / capacitator.
• All the terms have a S.I unit of Ω.
• The formula is:  $Z=R+jK$.
• Impedance = Resistance + Reactance.
• Therefore, option (a) is correct.