Recent content by david12445

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    How to analyze a complex circuit

    Thank you everyone for your help. I think I understand it now, but I just need more practice.
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    How to analyze a complex circuit

    Homework Statement Homework Equations Kirchoff's Current and Voltage laws The Attempt at a Solution How do you go about analyzing a complex circuit like this? Do you just write out the current equation for each highlighted junction and voltage equations for each loop? Is there a quick way...
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    Finding Voltage graph from current graph of capacitor

    Great, I understand now. Thank you very much for your help
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    Finding Voltage graph from current graph of capacitor

    Okay, so with the numbers I gave above, i(t) would just be equal to .004A from 0 to 4 microseconds, making V(t) = (1/C) * .004t, and then the same for the next time interval, does that look right? Thank you for your help
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    Finding Voltage graph from current graph of capacitor

    Would you try to integrate both sides? With that wouldn't you end up with the equation Q = VC? This is the part where I'm confused
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    Finding Voltage graph from current graph of capacitor

    Would the formula for the i-v relationship be v = c/(it)?
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    Finding Voltage graph from current graph of capacitor

    Homework Statement I am given the current flowing through a 2 micro-farad capacitor in the form of a graph, and I need to create a voltage graph from this. Homework Equations I = C dv/dt Q = VC The Attempt at a Solution The current graph is basic with a constant 4 mA from 0 to 4 microseconds...
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    How to Calculate the Current Flowing Through a Gold Wire?

    No, I don't think there is one. I tried a value to three significant figures, 2.25 * 10^-8 but it still wasn't right. MasteringPhysics is usually pretty good about saying it's right as long as you are close, so that must mean my answer is a good bit off. Are there any numbers I put in wrong?
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    How to Calculate the Current Flowing Through a Gold Wire?

    I searched online for the value of the resistivity of gold wire
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    How to Calculate the Current Flowing Through a Gold Wire?

    I'm putting exactly 3.57 mA into MasteringPhysics, but it keeps saying my answer is incorrect. http://imgur.com/SZN22sv is an image of what the question is, did I type anything wrong? http://imgur.com/pl1MQbC here are the answers I have already tried.
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    How to Calculate the Current Flowing Through a Gold Wire?

    Homework Statement The terminals of a 0.70 Vwatch battery are connected by a 70.0-m-long gold wire with a diameter of 0.100 mm. What is the current in the wire? Homework Equations V = IR R = pL/a The Attempt at a Solution I try to find resistance first, resistivity of gold is 2.2 * 10 ^-8...