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Insights
Symmetry Arguments and the Infinite Wire with a Current
May 17, 2022
Replies
1
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2K
Redirect
Non-Uniform Magnetic Field Calculations
Yesterday, 11:33 AM
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B
What happens to a photon's energy when it is refracted?
Tuesday, 8:50 AM
Replies
13
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245
Electron Spin and current-induced magnetic fields
Monday, 8:08 PM
Replies
18
Views
3K
B
Antenna induction, oscillating circuit generating EM Waves
Sunday, 10:49 AM
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1
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64
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Speed of magnetic flux propagation?
Apr 19, 2024
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3
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120
B
The voltage between two points
Apr 14, 2024
Replies
10
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161
B
Possible movement of this magnet?
Apr 13, 2024
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2
Views
106
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Question about Activating Solenoids that are facing each other
Apr 11, 2024
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1
Views
98
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How to calculate the ring resonator radii via Laplace?
Apr 10, 2024
Replies
0
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83
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Iron core barely boosting field strength
Apr 5, 2024
2
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43
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1K
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Problem with one of the premises in electrostatic pressure theory
Apr 3, 2024
Replies
1
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156
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Getting the sign right with the work-energy theorem
Apr 2, 2024
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2
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164
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How Do Eddy Current Dampers Work in Space Applications?
Apr 1, 2024
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4
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283
A
An electrolytic capacitor keeps charging by itself
Mar 27, 2024
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14
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472
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Force between opposing magnets
Mar 26, 2024
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7
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337
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Does Diamagnetism Occur Even in a Constant Magnetic Field?
Mar 25, 2024
Replies
7
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544
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qv x B force in electron's proper frame
Mar 24, 2024
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6
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216
Diamagnetism & levitation of pyrolytic graphite explanation
Mar 23, 2024
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9
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2K
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Can Electromagnetic Levitation Make an Entire Apparatus Go Skyward?
Mar 23, 2024
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3
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169
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Can a permeable but non-magnetic rotor be used in an electric motor?
Mar 22, 2024
Replies
18
Views
335
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Effect of Fringe Fields for a Bending (Dipole) Magnet on Field Integral?
Mar 22, 2024
Replies
0
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134
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Why Do Some Theorists Claim Cosmic Inflation Dilutes Magnetic Monopoles?
Mar 19, 2024
Replies
5
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284
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"Strange contradiction" that Maxwell found and resolved
Mar 18, 2024
Replies
7
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260
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An electrolytic capacitor charges by itself?
Mar 13, 2024
Replies
3
Views
1K
I
How Does a Magnetic Repulsion Machine Work?
Mar 9, 2024
Replies
5
Views
334
I
Resonant cavity with non-resonant dielectric
Mar 8, 2024
Replies
10
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472
I
Physical approximation to inverse square law using magnet(s)
Mar 5, 2024
Replies
12
Views
399
I
How large is the volume of a photon interacting with matter?
Mar 4, 2024
Replies
15
Views
533
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Maxwell's equations in the presence of matter -- Derivation
Feb 25, 2024
Replies
1
Views
384
A
Finding potential of a dipole outside of a sphere
Feb 25, 2024
Replies
2
Views
315
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Charging Capacitor with one terminal grounded
Feb 22, 2024
Replies
16
Views
588
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Magnetic field produced by an electric current
Feb 22, 2024
Replies
5
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323
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Work done by electric field of an irregularly shaped conductor
Feb 16, 2024
Replies
3
Views
496
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How can scalars like voltage, impedance, etc. be added like vectors?
Feb 14, 2024
Replies
17
Views
520
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Mutual inductance in a transformer
Feb 6, 2024
Replies
16
Views
1K
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How to use geometrical symmetries -- general advice? (Vector potential)
Feb 6, 2024
Replies
2
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300
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Reason for Opposite Signs for Terms in Faraday's Law and Ampere's Law
Feb 6, 2024
Replies
15
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746
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Quadrupole moment tensor calculation for ellipsoid
Feb 2, 2024
Replies
3
Views
347
I
Mutual inductance of bifilar winding, vs transmission line parameter
Jan 31, 2024
Replies
4
Views
304
I
Where is the lost energy in this example?
Jan 30, 2024
Replies
10
Views
620
Inducing EMF Through a Coil: Understanding Flux
Jan 29, 2024
6
Replies
191
Views
14K
I
Work to move a point charge from infinity to the centre of a charge distribution
Jan 26, 2024
Replies
4
Views
441
I
Conservation of charge in the Universe
Jan 25, 2024
Replies
24
Views
2K
I
How do we know that both plates of a capacitor have the same charge?
Jan 24, 2024
Replies
8
Views
1K
B
Single phase induction motor Torque under increased frequency and Same Current
Jan 23, 2024
Replies
2
Views
420
I
Do the plates of the capacitor exert a force on each other?
Jan 23, 2024
Replies
21
Views
642
B
Understanding magnetic flux change during the falling of magnet
Jan 20, 2024
Replies
1
Views
363
B
Changing magnetic polarity of an electromagnet
Jan 20, 2024
Replies
10
Views
542
I
Understanding dissipation of energy in a resistor through the Drude model
Jan 20, 2024
Replies
1
Views
968
I
Question about the current through a strong insulator
Jan 16, 2024
Replies
2
Views
408
B
LC resonance with high Q factor, Inductor with non magnetic core
Jan 15, 2024
Replies
4
Views
425
B
Inductive Reactance of Solenoid with Solid Metal Core With respect to frquency
Jan 14, 2024
Replies
5
Views
489
I
Question about Field Strength of Solenoid Positioned Near a Magnet
Jan 14, 2024
Replies
9
Views
465
I
Resistance and specific resistance relationships
Jan 11, 2024
Replies
16
Views
667
B
What's the difference between these two curves for AC Generator?
Jan 10, 2024
Replies
11
Views
538
A
Ponderomotive force and conservation of momentum
Jan 10, 2024
Replies
1
Views
362
I
Capacitor connected to voltage source, vary plate separation
Jan 9, 2024
Replies
9
Views
505
I
Structural difference between soft and hard ferromagnets
Jan 8, 2024
Replies
4
Views
610
I
Do electric currents depend on the frame of reference?
Jan 7, 2024
Replies
5
Views
424
I
Simple electromagnetic wave including delay
Jan 7, 2024
Replies
2
Views
397
B
Current-carrying coil and solenoid
Jan 6, 2024
Replies
3
Views
431
I
Generating Divergence Equation In Cylindrical Coordinates
Jan 5, 2024
Replies
3
Views
513
I
Is this solenoid / permanent magnet configuration possible?
Jan 2, 2024
Replies
5
Views
455
B
Can I use this method to charge a metal sphere?
Dec 26, 2023
Replies
9
Views
553
I
Alternating current in a perfect conductor
Dec 26, 2023
Replies
11
Views
766
I
What causes the unexpected annihilation point in the Magic-Tee configuration?
Dec 19, 2023
Replies
15
Views
691
I
Problems in classical electrodynamics: Only for point-like particles?
Dec 17, 2023
Replies
1
Views
452
I
Electrical breakdown in air in the presence of a single charge
Dec 16, 2023
Replies
3
Views
545
A
Visualising visible light Fluorescence
Dec 13, 2023
Replies
6
Views
567
I
Light intensity required to shine a light through an opaque object
Dec 12, 2023
Replies
22
Views
1K
B
Definition of ground potential in infinite sheet charge distributions
Dec 10, 2023
Replies
11
Views
862
A
Proving an equation in a book about Periodic Structures
Dec 7, 2023
Replies
6
Views
949
B
Symmetry regarding induced potentials?
Dec 7, 2023
Replies
4
Views
541
I
What is the ideal fluid and setup for observing Magnetohydrodynamics?
Dec 6, 2023
Replies
1
Views
519
B
Electromagnetic radiation interacting with a magnetic field
Dec 2, 2023
Replies
24
Views
1K
I
Permanent Magnetic Dipole in an electromagnetic field
Nov 29, 2023
Replies
2
Views
591
B
Is the Direction of Magnetic Fields Truly Conventional?
Nov 29, 2023
Replies
6
Views
641
A
Magnetization and magnet poles
Nov 23, 2023
Replies
10
Views
743
I
How to Measure the Energy of an Electromagnetic Wave?
Nov 23, 2023
Replies
4
Views
926
I
Magnetic field as result of length contraction
Nov 18, 2023
Replies
17
Views
1K
I
Which law defines the AC inducing voltage in the inductor?
Nov 18, 2023
Replies
25
Views
1K
I
Current through U-wire (rail gun): Violation of (naive) conservation of momentum?
Nov 15, 2023
2
Replies
61
Views
2K
A
Identifying Magnet Grade for FEMM Simulation: Neodymium Cylinder Magnets
Nov 14, 2023
Replies
5
Views
805
A
Electric field of infinite sheet with time dependent charge
Nov 12, 2023
Replies
22
Views
876
I
What causes skin effect in AC currents?
Nov 9, 2023
Replies
2
Views
674
B
Measuring electric field vs magnetic field
Nov 8, 2023
Replies
8
Views
868
I
Does B=0 at points out of the plane containing and normal to a point current I?
Nov 8, 2023
Replies
8
Views
679
I
Geometry of Magnetic field lines as they approach a magnet pole?
Nov 8, 2023
Replies
28
Views
1K
I
When to properly use "voltage"
Nov 6, 2023
Replies
25
Views
1K
I
Railgun: Significant magnetic field where projectile is?
Nov 4, 2023
Replies
8
Views
754
B
Why can only the electric field (E) be measured?
Nov 4, 2023
Replies
23
Views
1K
I
Circular loop in uniform magnetic field
Nov 3, 2023
Replies
11
Views
775
I
Is the magnetic field from this current rotationally symmetric?
Oct 30, 2023
Replies
12
Views
790
A
General solution to Laplacian in cylindrical coordinates
Oct 30, 2023
Replies
13
Views
857
I
Do you think emissivity of air makes sense?
Oct 27, 2023
Replies
16
Views
2K
I
Electricity and Magnetism: Verifying the Inverse Square Law
Oct 21, 2023
Replies
3
Views
780
I
Can the Last Maxwell's Equation Explain Polarization of a Wire's Insulator?
Oct 21, 2023
Replies
3
Views
805
B
Understanding the Relationship Between i*cos and sin in Circuit Analysis
Oct 21, 2023
2
Replies
39
Views
2K
I
Inductance Measurement: Error Due To Series Resistance
Oct 18, 2023
Replies
6
Views
768
I
Ampere's Law For Static Magnetic Field
Oct 8, 2023
Replies
5
Views
980
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