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AC Circuits — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsAC Circuits3 Marks
Question
Define: (a) Inductive reactance (b) Capacitive reactance (c) Impedance.
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Answer

Inductive reactance:
Effective resistance offered by the inductance is called inductive reactance $(Χ_L).$
\(X_L=\omega_L=2 \pi fL\)
capacitive reactance:
The capacitive reactance of a capacitor is defined as the ratio of r.m.s voltage (e.m.f) across the capacitor to the corresponding r.m.s current.
Impedance:
The effective opposition offered by the inductor, capacitor and resistor connected in series to flow of AC current. is called impedance.
\(Z=\sqrt{R^2+\left(X_L-X_C\right)^2}\) 

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