Recent content by Jason Williams

Oops, sorry you're totally right. I left the potentials in that form because you can't solve for ##C##, ##D##, and ##E## without knowing the potentials on each surface. Is this the wrong way of approaching the problem?

Homework Statement Three insulated concentric spherical conductors, whose radii in ascending order of magnitude are ##a, b, c##, have charged ##e_1, e_2, e_3## respectively, find their potentials and show that if the inner most sphere is grounded, the potential of the outermost is diminished...

Homework Statement In the inertial frame ##S'## the standard lattice clocks all emit a 'flash' at noon. Prove that in ##S##, this flash occurs on a plane orthogonal to the ##x##-axis and traveling in the positive ##x##-direction at speed ##\frac{c^2}{v}##. Homework Equations Lorentz...

Okay got it. Just one last question. The last part I am confused about is just that I read online that in many homes, the neutral wire is actually connected to ground. In that case, does the equal and opposite current still apply?

I understand that voltage is defined by two points, and in this case the voltage in the hot wire is being measured with respect to the neutral wire (which is grounded). So then to clean up my question, I am asking: What is physically happening when the voltage between the hot wire and the...

Right and I agree! So my question is: How is it possible for the voltage to oscillate on a single line of wire? I thought the entire idea behind alternating current is you have current going in two directions, and I'm just confused how that's possible with one wire. If the current reverses it's...

Yupp I understand everything you're saying and I agree. I guess my question is: How is it possible for the voltage to oscillate on a single line of wire? I thought the entire idea behind alternating current is you have current going in two directions, and I'm just confused how that's possible...

Read the potential between a point on the wire an ground? I'm saying that it would have to read above 0V (if the AC produces a current in the neutral wire) the same way the wire in the voltage in the HOT wire reads above 0V when the AC produces a current in it.

Please bare with me on this topic. Believe it or not I've taken my fair share of electronics courses at uni, but this is something they just glossed over and has been troubling me for a while. I understand how AC voltage and current works, I just don't understand how it works when it comes to...

I'm a bit confused as to how only one wire changes it's polarity in an alternating circuit. I also checked out a previous thread (https://www.physicsforums.com/threads/how-can-polarity-of-ac-inverse-but-keep-the-live-hot-and-neutral-cold.752605/) and didn't find a sufficient answer. I found this...

So I have one last roadblock to understanding how circuits fully work and it has to do with currents (in series). To my current understanding, if we were to have a simple DC circuit with one battery at 10V and one resistor at 10 ohms, the current at all points in the wire is 1 A. Now, if we were...

Okay cool, got it. Thanks so much!

Okay that's what I figured, but is it fair just to make that substitution? Like why not use the regular equation for the potential?

I'm having an issue with the equation that Griffith uses to derive the field of a polarized object. In Chapter 4, Section 2.1, he starts off with equation 4.8 with the 'script r' to denote the distance between a point outside the distribution P (and the origin) and the dipole (and the origin)...

Ahh okay, yeah that's what I figured and changed it in my homework. Thanks so much again!