Hello everyone!
I've been thinking a lot about this thermodynamics problem , hearing all sorts of opinions but never getting a full rigurous explanation. So we have a cylinder that is placed in vacuum. We insert in the cylinder a monoatomic ideal gas. The gas is trapped inside the cylinder with...
I am aware of the problem that you solved, but this is not my point. What I am trying to say is that we have an infinitely long solenoid and we try to calculate the tensile force acting on one of its loops ( we can assume that the loop is in the middle) due to the magnetic field of the solenoid...
Hello everyone! I found in my textbook that in order to calculate the pressure experienced by the surface of a long straight solenoid with ##n## turns per unit length and current ##I## we don't use the typical magnetic field ##B=\mu_0nI## on a loop of the coil , but a corrected magnetic field...
So the major misunderstanding here is that the square frame is actually made of superconducting material, so the entire frame is a equipotential region.
And I think that this means that A and P have the same potential , because if we were to apply kirchhoff's law for voltage taking the loop to be the square frame, than we would obtain ##V_A=V_P## . Am I right?
Actually there is a thing that the author says and I didn't notice. It says that the frame of this grid is made of superconducting material and only what is in the interior of the square has restistance.
What I was trying to say is that if we consider only point A as a potential source, than , from symmetry , we can fold the square grid twice ( connecting N-M and P-A)
I think I got it. I had this feeling that as the current gets further away from A , is diverging more and more, but is diverging until it reaches the "O diagonal" of the square and than it converges again so it is symetric.
The way I see this grid is like a superposition of two grids with two independent voltage sources ##V_- ## and ##V_+## which are in A and O. The voltage is created by passing a current trough a resistance. So is see now that the current in A has to exit in the opposite point. And than superposed...
Homework Statement
We have a resistor grid with 6x6 squres. ( figure below) If we know the voltage between ##O## and ##A##, what is the voltage between:
##a) O## and ##B##
##b) C## and ##D##
##c) E## and ##F##
Every side has the same resistance.
Attempt for solution:
Because of the symmetry...
1. The problem statement, all variables and given/known data
In an oscillating circuit consisting of of a parallel-plate capacitor and an inductance coil with negligible active resistance the oscillations with energy ##W## are sustained. The capacitor plates were slowly drawn apart to increase...