Recent content by Parad0x88

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    Find the inductance and capacitance of an RLC/LC circuit

    Oh! I see! Well in that case, let's see... There's 2 X pi radians in a cycle, so basically ω = 6283.19... Would that be what I have to use in those forumlas? Q = 2pi * 100/1 = 628.319 and R = 2Ω We have Q = (ω0L) / R 628.319 = (6283.19 X L) / 2 solve for L like I previously did And...
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    Find the inductance and capacitance of an RLC/LC circuit

    Isn't that what I did? The formula for frequency is the one for the LC circuit, and the information for the frequency is given for the LC circuit. Edit: Oh wait, is it on the first formula that lies the problem, since I'm finding L in an RLC circuit with the frequency for an LC circuit? If...
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    Find the inductance and capacitance of an RLC/LC circuit

    Ok well if I do that, this is what I get (I left out the units on here because it gets confusing and I don't know how to do it like you guys: Q = 2pi * 100/1 = 628.319 and R = 2Ω We have Q = (ω0L) / R 628.319 = (1000 X L) / 2 1256.638 = 1000L L = 1.2566 And then ω0 = 1 / √(LC)...
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    Find the inductance and capacitance of an RLC/LC circuit

    That's an interesting formula you got there! I didn't see that in my book o_O
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    Find the inductance and capacitance of an RLC/LC circuit

    I don't think I have the proper tools to answer that question just yet, all of this is Chinese to me... The teacher didn't really cover it, he just skimmed over, guess I'll have to read the book. Even the concepts you mentioned, or what's in wikipedia, have not been covered in class (and...
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    Find the inductance and capacitance of an RLC/LC circuit

    I copy/pasted the whole problem, so it's not mentioned if it's series or parallel I could find Q with the formula you gave me, if the system loses 1%, then it would be: Q = 2pi X 100/1 = 2pi X 100 Attenuation factor, that's not even something we covered in class... Do you simply mean...
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    Find the inductance and capacitance of an RLC/LC circuit

    Homework Statement The energy of the RLC circuit decreases by 1% during each oscillation when R=2 Ohms. If this resistance is removed, the resulting LC circuit oscillates at a frequency of 1 kHz. Find the inductance and the capacitance. Hint: be aware of the difference between regular and...
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    EMF generated by a magnetic field

    If I use the left-hand rule, I am deducing that the top of the antenna would be negative and the bottom would be positive, would that be correct?
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    Find the resistance and inductance ensuing a short-circuit

    Ahh put it like that, it makes sense.. Awesome, thanks!
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    Find the resistance and inductance ensuing a short-circuit

    Awesome thanks, I just want to make sure I understand correctly though. On one end, we have the current that decay from 24A to 0A with a sudden drop from 24A to 12A, thus giving an inversely proportional graph On the other end, according to my book (I don't have the reflex to picture the...
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    Find the resistance and inductance ensuing a short-circuit

    Ok well the current decaying over time, I'm assuming it's non-linear, otherwise it would have been specified, so it's an inverse non-linear graph (I don't know it that is the right term, it's been a while since I studied graphs) The formula that I have posted, wouldn't also yield a non-linear...
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    Find the resistance and inductance ensuing a short-circuit

    Ok, then the next step would be to find the time constant to get from 24A to 12A, here's how I would do it: I = ε/R X (1 - e-t/time constant, isolate for time constant: IR / ε = 1 - e-t/time constant 1 - (IR / ε) = e-t/time constant ln (1 - (IR / ε) = -t / time constant time constant = -t...
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    Find the resistance and inductance ensuing a short-circuit

    Should I assume it's an RL circuit then? Because if I do then I would get a completely different set of equation... For R, would (assuming it's an RL circuit) the equation be: I = (ε/R) (I being the initial current at t = 0) ==> R = ε/I = 0.125Ω.. which I just noticed is what I previously...
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    Find the resistance and inductance ensuing a short-circuit

    Homework Statement To measure the inductance and resistance of a real inductor, a physicist first connects the inductor to a 3V battery. At these conditions, the final, steady, current is 24 A. Then the physicist suddenly short-circuits the inductor with a thick (resistance-less) wire place...
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