All Questions
8
questions
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votes
4
answers
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How to calculate the Force (in Newtons) produced by a solenoid?
How would I calculate the force on an object (in Newtons) that is under the influence of an electromagnetic field produced from a solenoid? I know it would involve using the equation $B=(μNI)/L$ to ...
1
vote
4
answers
1k
views
Non-conservative EMF around a circuit and delocalization of motional EMF
Around a circuit, the EMF is non-conservative. In fact, we are in a closed loop and "its" work (the EMF is actually the work itself per unit charge) is non-zero (contrarily to conservative forces/...
0
votes
1
answer
56
views
For closed circuits, why can't we have more than one $f(r)$?
Force between current elements depends on a function of angles [$f(\eta, \theta, \theta^{\prime})$] and also on a function of distance between them [$f(r)$] .
For closed circuits, there are more ...
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2
votes
1
answer
341
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Doubt in Maxwell's treatise
I am reading Maxwell's treatise Vol 2 page 154 and it seems to me that something is incorrect.
Equation (9) is fine. Now let's derive equation 10 from this.
A 1954 edition of this treatise (called ...
- 137
0
votes
1
answer
310
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Help me overcome my confusion in Maxwell's treatise
I am reading Maxwell's treatise vol 2 page 157 and I have a doubt to clear in the following page:
My analysis of this derivation:
$\vec{ds}$ and $\vec{ds'}$ are the elements of circuits; $\cos{\...
0
votes
0
answers
92
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Equivalence of two equations of force on a magnet in a magnetic field
According to Biot and Savart's experiment, force on a magnetic pole m due to a circuit s' is:
$$\vec{F}=m\oint\dfrac{Ids'\times\hat{r}}{r^{2}}=m\vec{B}$$
Now if we consider the magnetic pole m as a ...
user130324
1
vote
2
answers
396
views
What physical forces allows for electromagnetic induction [duplicate]
In electromagnetic induction, what force is actually doing the work? what physical force actually drives the electrons around the circuit?
Let's say we have a coil and an increasing magnetic field ...
- 815
13
votes
4
answers
15k
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How do electrons actually move in a circuit?
Last year, we were taught about electricity, about how electrons move in a closed circuit. But as our teacher had not taught us about electric fields yet, she gave us a simplified model of motion of ...
user49111