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ravi vel prashanth Grade: 12
        
At what angular frequency is the voltage amplitude across (a)resistor, (b) inductor, (c) capacitor, in an LCR series circuit at maximum value?
7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear ravi


current in LC R circuit


i = V/[R2 + (1/wC -wL)2]1/2


 voltage across resistor  = iR  = VR /[R2 + (1/wC -wL)2]1/2


voltage across inductor  = iwL  = VwL /[R2 + (1/wC -wL)2]1/2


voltage across capacitor  = i/wc  = V /wC[R2 + (1/wC -wL)2]1/2


 


for maximum value differentiate each w.r.t w and put equal to zero


 for resister w=1/√LC


for inductor  =√[2C/(2L3 -CL2R2)]


for capacitor=√[(2L-CR2)/2L2 ]


 


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Badiuddin

7 years ago
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