RLC Circuit qualitative explanation any1?

AI Thread Summary
The discussion focuses on the qualitative aspects of RLC circuits, particularly the physical meanings behind voltage drops across inductors, capacitors, and resistors. It emphasizes the need for an explanation that goes beyond vector diagrams, seeking clarity on how energy is supplied and dissipated in the circuit components. The conversation highlights that in AC circuits, inductors create opposing electric fields when current varies, while capacitors store and repel incoming charges. Understanding the relationships between voltage and current for each component is crucial for grasping the dynamics of the RLC circuit, including concepts like resonance and Q factor. The thread ultimately seeks a deeper physical understanding of energy transitions within the RLC circuit.
sudar_dhoni
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can some one explain me the qualitative aspects of RLC circuit
i am satisfied with the vector diagrams i want the physical meaning behind
say for instance in ac with inductor when current varies induced electric field is set up which opposes the current so there is a voltage drop
similarly in capacitor it stores charges and they repel the incoming current and also for resistor
like this i want a physical explanation of RLC series circuit what happens there and also about resonance and q factor

can u explain in terms of voltage drops in inductor capacitor and resistor
see the source supplies energy to current or charges,these charges then somehow or the other they have to return to lower energy state so they drop their energy (energy is same as voltage -enegy possesed by unit charge) so they drop their voltage.All i have said till now is in
http://www.physicsclassroom.com/Clas...uits/u9l1b.cfm
my doubt is that how does this happen in RLC circuit
please don't explain in terms of vector diagrams as it is not convincing
i want the physical meaning behind
 

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sudar_dhoni said:
can some one explain me the qualitative aspects of RLC circuit
i am satisfied with the vector diagrams i want the physical meaning behind
say for instance in ac with inductor when current varies induced electric field is set up which opposes the current so there is a voltage drop
similarly in capacitor it stores charges and they repel the incoming current and also for resistor
like this i want a physical explanation of RLC series circuit what happens there and also about resonance and q factor

can u explain in terms of voltage drops in inductor capacitor and resistor
see the source supplies energy to current or charges,these charges then somehow or the other they have to return to lower energy state so they drop their energy (energy is same as voltage -enegy possesed by unit charge) so they drop their voltage.All i have said till now is in
http://www.physicsclassroom.com/Clas...uits/u9l1b.cfm
my doubt is that how does this happen in RLC circuit
please don't explain in terms of vector diagrams as it is not convincing
i want the physical meaning behind

(The physicsclassroom link appears to have expired)

Are you familiar with the equations that relate voltage and current for the Resistor, the Inductor, and the Capacitor? That's the best place to start, in understanding how each component works with respect to how the voltage across it and the current through it are related.
 
Last edited by a moderator:
berkeman said:
(The physicsclassroom link appears to have expired)

Are you familiar with the equations that relate voltage and current for the Resistor, the Inductor, and the Capacitor? That's the best place to start, in understanding how each component works with respect to how the voltage across it and the current through it are related.

V=IR
E=Ldi/dt
V=Ed
 
sudar_dhoni said:
V=IR
E=Ldi/dt
V=Ed

Close, but not quite right.

Resistor V(t) = I(t) R

Inductor V(t) = L \frac{dI(t)}{dt}

Capacitor I(t) = C \frac{dV(t)}{dt}
 
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