All Questions
Tagged with electromagnetic-induction potential
37
questions
6
votes
1
answer
531
views
If a loop is not complete, and magnetic field passing through it is changing; will their be emf induced in the loop?
In a setup like the one show in the figure:
Will there be an induced EMF across the loop(given that the field is increasing)?
(my dilemma is : since the loop is not complete, we cannot define the ...
- 63
0
votes
1
answer
51
views
EMF Generated according to Faraday's Law
According to Faraday's Law, due to a relative movement between the current carrying loop and the magnetic field, an EMF is induced in the loop causing a current flow. However, according to Maxwell-...
- 301
1
vote
2
answers
94
views
With induced voltage, what is the electric potential difference?
Lets say we have a closed circular loop of wire in a constant magnetic field in the (-z) direction. If I suddenly make the circular loop smaller (meaning a smaller surface area), I will induce a ...
- 11
0
votes
2
answers
157
views
Is the concept of motional EMF consistent with Faraday's Law?
Consider a circular homogeneous metallic coil sliding on a smooth horizontal surface in a region of uniform magnetic field $B$ which is perpendicular to the face of the coil. By Faraday's law, the net ...
- 341
0
votes
3
answers
110
views
Metal/good conductor frame in a changing magnetic field
Imagine that we put a metal/good conductor frame into a changing magnetic field. Due to the fact that this is an electromagnetic induction phenomenon, an induced EMF can be measured between the two ...
- 25
4
votes
2
answers
186
views
Electric potential vs electromagnetic potential questions
We were all taught about the electric potential $V$, which is defined up to a constant, and can be measured with a voltmeter or an oscilloscope.
On the other hand, in electromagnetism are defined the ...
- 487
1
vote
3
answers
733
views
What is definition of direction of induced EMF?
This post consists of two questions both relating to the directional aspects of emf, in some way. I could not include both the questions in the title, so I chose the most troubling one.
Introduction: ...
- 480
5
votes
4
answers
782
views
What is the difference between EMF induced in Faraday's law and the potential difference due to electric field?
What is the difference between emf induced in Faraday's law and the potential difference due to electric field?
If we thake a conducting circular loop in a changing magnetic field then we have an emf ...
1
vote
1
answer
304
views
How to calculate retarded potential (for magnetic field calculation) for a group of current carrying loops where the magnitude of current is changing?
For constant current, the magnetic field seems to be easy to calculate because of Biot-Savart Law. For a loop having varying magnitude of current (simplifying an electromagnet), however, it seems that ...
user320191
0
votes
0
answers
29
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Potential Difference in Electromagnetic Induction
Is $\int E \cdot \text{d}s$ for a branch having non-zero current $I$ and resistance $R$ equal to $IR$ if the current is induced by varying magnetic field?
- 1
0
votes
1
answer
40
views
What factor(s) can induce the charges to the conductor as in this isolated situation?
The 2 conductors exists.
The actual diagram(not this diagram) depicts conductor with clay form but I depicted it as sphere form since I thought that sphere form can also be congruent of clay form.
$$ ...
1
vote
5
answers
578
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Induced voltage as a difference of potentials on a ring
If you put a ring (Picture 1) of wire into changing magnetic field, the process called magnetic induction creates induced voltage. Voltage is by definition (Definition 2) the difference in electric ...
0
votes
1
answer
101
views
Uniform electric field formation in motional emf induction
Why is the electric field $E$ across the ends of a conducting rod, when it's moved with a uniform velocity $v$ in a magnetic field $B$, uniform? Wouldn't it vary non-linearly, since there are opposite ...
- 256
1
vote
1
answer
290
views
Work done by Magnetic Force in Motional EMF
The law of Magnetic force is given by:
$$F = q [v , B ]$$
I believe that work cannot be done by this force as displacement dx (which has the direction as v) is always perpendicular to Force.
Is this ...
- 1,568
0
votes
2
answers
2k
views
Direction of induced current and region of higher potential?
To my original understanding, in a DC/AC circuit the current always flows in the direction of higher potential to a lower potential. But apparently induced current flows from a lower potential to a ...
- 15