• 25 Mar 2018


Reactance is the opposition inserts by a pure coil or a capacitor to the flow of alternating current through it. A pure coil or capacitor is one without any resistance in it. The opposition offered by a resistor to the flow of current is termed as resistance. Resistance Dissipates energy in the form of heat. Reactance diminishes current by setting up an opposing EMF and therefore controls a source of alternating emf without wastage of electrical energy.


There are two type of reactance

1.     Inductive reactance

2.     Capacitive reactance


Inductive Reactance

Reactance of a coil, called inductive reactance, it is denoted by XL. Inductive reactance is depends the frequency of an AC and inductance of the coil. If frequency (f) in fz and Inductance (L) in henries then inductive reactance XL is given by XL = 2πfL


Capacitive Reactance

Reactance of a capacitor, is called capacitive reactance, it is denoted by XC. Inductive reactance is depends the frequency of an AC and capacitance of capacitor. If frequency (f) in and capacitance (c) then capacitive reactance XC is given by XC = 1 / 2πfc


Note1. Both capacitive reactance and Inductive Reactance is measured in Ohms

Note2. The combination of Reactance and resistance is called impedance.




For Comment you need to Login

Related Blogs

Basics of a Transformer

Basics of a Transformer

Transformer The transformer is an instrument used to covert an AC at a certain voltage to an AC at a different voltage without change of frequency

28 Mar 2018
Regulated power supply

Regulated power supply

Today almost every electronic device needs a DC supply for its smooth operation and they need to be operated within certain power supply limits. This

13 Mar 2018