Recent content by The Blind Watchmaker

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    Studying External resources to help prepare for Electromagnetism?

    Thank you for your suggestion, I will give Griffiths a try.
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    Studying External resources to help prepare for Electromagnetism?

    I got an A+ for my multivariable calc course so I believe that I have a solid understanding. Thanks, I will give Griffiths a try!
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    Studying External resources to help prepare for Electromagnetism?

    Some background info: I am an international student that is currently studying at a supposedly prestigious university (Top 20 in QS and Times Higher Education ranking). As part of my major requirement, I am taking an EM module. The problem is, my forte is not really physics (I am an IBO...
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    Electric flux of a cube due to a point charge

    Homework Statement Homework Equations Gauss's Law The Attempt at a Solution I simply used logic and observed the symmetry of the cube. If the charge is placed on the middle of the cube, the flux would simply be Q/∈0. The face of the cube itself can be split into 4 squares, with the charge at...
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    Breaking down a complicated resistance circuit

    Oh nevermind just realized this is is a wheatstone bridge, silly me
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    Breaking down a complicated resistance circuit

    Homework Statement Homework Equations - The Attempt at a Solution I tried to break it down to: But apparently it is incorrect, can someone tell me the correct configuration? And explain too! Thanks :) (Please do not give ambiguous "hints").
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    Charged capacitors connected together, find the final potential difference

    They are in series thus Q1=Q2. I do not get why they have the same potential difference as I assume only 1 battery is used
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    Find the equivalent model of an infinite ladder circuit

    Homework Statement 2. Homework Equations Ohm's law and Kirchoff's voltage law The Attempt at a Solution My solution is a bit long so I will just briefly explain it. First, we find the total equivalent resistance. Since the circuit extends to infinity, it is equal to replacing the second...
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    Charged capacitors connected together, find the final potential difference

    Homework Statement Homework Equations C = Q/V The Attempt at a Solution Q1 = Q2 C1*V1 = C2*V2 2*V1 = 5*V2 V2 = 2/5*V1 V1+V2 =100 7/5*V1 = 100 V1 = 71.4 V Can someone verify my working? Thanks!
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    Unsure of how to approach this type of problem—Current densities in wires

    My answer is only IV true, but in the answer key it is IV and V. How does the velocity drift stay the same in both cables? vd1/vd2 = J1/nq1⋅ nq2/J2 vd1/vd2 = q2/q1 vd1/vd2 = 4q1/q1 (based on the relation that I1 = 1/4 I2) vd1 = 4vd2 That is why I am asking whether other formula for velocity...
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    Unsure of how to approach this type of problem—Current densities in wires

    Homework Statement Homework Equations J = nqvd J = I/A Q = It The Attempt at a Solution Basically we check whether the variable that we are looking at is proportional or inversely proportional. However, at what part do we stop? Where is it okay to substitute say Q = It and where is it not...
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    What is the role of biology in the field of biomedical engineering?

    I am a first year undergrad student majoring Biomedical Engineering. Though I may be in an engineering course, my forte is not exactly physics, but biology. In fact, one of the reasons I got accepted to my university is due to the medal from the International Biology Olympiad (IBO). I will be...
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    Rectifying my logic of Gauss's Law

    So if the question is asking for the "charge of the larger shell" it would be 91.6 + 3.3 μC, but since this question is only asking for the outer surface, the charge is taken to be 91.6 μC?
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    Rectifying my logic of Gauss's Law

    Ah I think I get it. Since the electric field inside a conductor must be 0, there must exist a charge on the inner surface of the larger shell that is equal and opposite to 3.3 μC. Thus, the remaining charge is 91.6 - 3.3 = 88.3 μC. Is this what you are hinting at?
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