New answers tagged electromagnetic-induction
2
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Can we say induced emf depends on the path considered?
can I say that we can associate value to induced emf between any two points over some arbitrary path?
Yes.
Can we conclude induced emf over any imagined path does not depend on whether there is some ...
- 41.3k
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Does dropping a magnet through a copper pipe generate electricity?
Try using a bunch of thin magnets have enough to keep it going for a good minute as fast as possible for no separation.
1
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Which direction does the current go?
Consider the flux change, $\Delta \Phi_{2,1}$, through 2 due to current change in 1. Here it will help to think about the shape and direction of the (closed loop) field lines produced by 1. Lenz's law ...
- 36.6k
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Which direction does the current go?
Lenz's law says that the induced current in a loop will flow in the direction that opposes the change in external flux through the loop. So if the right-hand loop is closed at the bottom, then it's ...
- 51.6k
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Current in long thin superconducting loop moved into external $B$ field
Upon further reflection, I think I'm introducing unphysical infinities by assuming infinitely thin wires. I believe the skin effect will make the current flow on the outer boundaries of the wires. So ...
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Is self-inductance dependent on geometry? Is $\Phi$ net flux or just flux due to cirucit?
The Inductance which you are referring to is a self-inductance of a coil, which is strictly defined by: \begin{equation}
L_{11} = \frac{\Phi_{11}}{I_1}
\end{equation} The self-inductance is only ...
0
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Question about electromagnetic induction
Just to answer your second question, since @agaminon aswered the first.
They say an EMF is induced because of lorentz force
That's not true. The emf is induced as a consequence of Faraday's law, ...
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Question about electromagnetic induction
The direction of current would be such as to generate a magnetic field that opposes the original one. In the case of a straight wire, this would probably be some strange current configuration, simply ...
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