What happens to the current through an inductor/resistor/capacitor when frequency increases
Favorites|Homepage
Subscriptions | sitemap
HOME > > What happens to the current through an inductor/resistor/capacitor when frequency increases

What happens to the current through an inductor/resistor/capacitor when frequency increases

[From: ] [author: ] [Date: 12-08-09] [Hit: ]
A capacitor-resistor circuit is an RC circuit and an inductor-resistor circuit is an RL circuit.If all three are present, the circuit will have a resonant frequency: when this frequency is applied, the voltage and current transferred will be at their highest; all other frequencies will have lower responses.Through a capacitor, the current increases with frequency (complex impedance of a capacitor is 1/jwC).......
Voltage amplitude is fixed. Any help is appreciated. Thanks!

-
A circuit involving resistors, capacitors, and inductors is called an RLC circuit. A capacitor-resistor circuit is an RC circuit and an inductor-resistor circuit is an RL circuit. If all three are present, the circuit will have a resonant frequency: when this frequency is applied, the voltage and current transferred will be at their highest; all other frequencies will have lower responses. Through a capacitor, the current increases with frequency (complex impedance of a capacitor is 1/jwC). Through an inductor, the current decreases with frequency (complex impedance of an inductor is jwL). The current through a resistor depends only on the present voltage and does not depend on frequency.

-
Remember: "j(omega)" = "jw" comes from 1) finding the relationship between V and I, 2) taking the Laplace transform (which takes a function of TIME [t] and turns it into a function of FREQUENCY [s]) of it, and 3) replacing the 's' in the result by "jw" (j = sqrt(-1) 'w' = omega, a frequency)

Report Abuse


-
Current through inductor decreases (X of L increases) i = V/XL
Current through resistor stays the same (Resistance remains constant) i = V/R
Current through a capacitor increases (X of C decreases) i = V/XC
1
keywords: an,resistor,increases,capacitor,inductor,when,to,frequency,current,happens,What,through,the,What happens to the current through an inductor/resistor/capacitor when frequency increases
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .