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P16 PH333 5.3.1-5.3.4
Transcript of P16 PH333 5.3.1-5.3.4
5.3.1 Straight-line Currents
5.3.2 Divergence and curl of B
5.3.3 Ampere's Law
5.3.4 E vs. B
infinite line current
Divergence of B
Curl of B
drop the other terms that are zero.
product rule again.
Is always true, but not always nice.
like Gauss' law (nice symmetries)
Infinite straight lines
Comparing E and B
Maxwell's equations for electro and magnetostatics.
statics, nothing is really changing
No magnetic Monopoles
E field is much bigger than B
"I'm not understanding how the magnetic field can be zero outside the enclosed current area. How is that? Especially since magnetic fields are felt in free space. "
"A walk-through (or at least a set-up) example of Ampere's Law with each surface would be great."
" I also didn't get how they applied the right hand rule in some of the cases."
"why can't there be any magnetic monopoles?"
"Why does Nabla not depend on primed coordinates?"
"Does the current density only lie within the material because the source charges for the surface of a material is infinite? I was just a bit confused about the reasoning."
"When it comes to describing the enclosed current how do you equate that to K, J, and I?"