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PPMT, Magnetic Flux Switch, electro-permanent magnet generator
Dec 12, 2022
Replies
8
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2K
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Questions about a Conductor in an Electric Field
Dec 11, 2022
Replies
13
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1K
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Deriving expression for resistance in terms of current density
Dec 9, 2022
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7
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1K
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Formula for force between two sheets of aluminum foil under voltage
Dec 9, 2022
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10
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1K
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Do volume integrals involve bounding surfaces?
Dec 7, 2022
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14
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1K
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Dec 6, 2022
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51
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6K
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Faraday's Law Equation: Derivative vs Delta
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974
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Induced electric fields and induced magnetic fields confusion
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2K
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6
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4K
U(1) invariance of classical electromagnetism
Dec 1, 2022
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29
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8K
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Exploring the Electric Field of a Moving Charged Spherical Shell
Nov 30, 2022
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14
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1K
B
Is there some electrical charge that is neither positive nor negative?
Nov 29, 2022
Replies
11
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1K
B
Understanding Lewin's Circuit Paradox: Explained Simply and Clearly
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24
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1K
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Uniform charge distribution in a conductor
Nov 28, 2022
Replies
5
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1K
Why is the electric field within a conducting sphere 0?
Nov 28, 2022
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11
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9K
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Magnetic fields attracting two disc-shaped magnets
Nov 28, 2022
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11
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1K
Rotating a spherical conductor in an Electric field
Nov 22, 2022
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20
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3K
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How does a rotating magnet create levitation?
Nov 21, 2022
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1
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887
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Static Point Charge Should Have Zero Effect
Nov 14, 2022
Replies
18
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925
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Why is the electric field in y direction in a TE guided wave?
Nov 4, 2022
Replies
5
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834
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How do I visualize the magnetic field?
Nov 3, 2022
Replies
1
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922
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How Does a Vibrating Sample Magnetometer Calculate Magnetic Moment?
Oct 25, 2022
Replies
2
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680
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Where is this term coming from?
Oct 25, 2022
Replies
5
Views
630
I
Dielectric constant, dispersion and response of the medium
Oct 24, 2022
Replies
1
Views
785
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Can the A and φ potentials be fixed in a region of space?
Oct 21, 2022
Replies
14
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774
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A and ϕ inside a Faraday cage?
Oct 21, 2022
Replies
2
Views
662
B
Method of images and spherical coordinates
Oct 20, 2022
Replies
4
Views
831
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Does a Faraday Cage trap EMF inside and increase exposure?
Oct 20, 2022
Replies
5
Views
998
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Faraday cage made of a real conductor
Oct 20, 2022
Replies
3
Views
774
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Can I send an electromagnetic wave to a specific point?
Oct 20, 2022
Replies
3
Views
911
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Where do discontinuities in the electromagnetic field occur?
Oct 19, 2022
Replies
2
Views
724
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Are EM signals also analytical backwards in time?
Oct 15, 2022
Replies
6
Views
778
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Homopolar generator question: Magnetic “wake”
Oct 14, 2022
Replies
7
Views
1K
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Can Current Density Static Create an Effective Electromagnetic Shield?
Oct 13, 2022
Replies
3
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989
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A question about current density in finite element analysis
Oct 7, 2022
Replies
2
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908
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Relationship between magnetic potential and current density in Maxwell
Oct 5, 2022
Replies
2
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1K
I
Some questions about how electrical transformers work
Sep 28, 2022
Replies
9
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1K
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Biological examples of a Biot-Savart law in magnetostatics?
Sep 27, 2022
Replies
5
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842
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Phase Difference of Current & Voltage: Capacitors, Inductors & Complex Numbers
Sep 26, 2022
Replies
8
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1K
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Puzzled about Section 3.12 of Jackson's E&M book
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Replies
18
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1K
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Question about the motion of a charged particle
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Replies
14
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1K
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Tangential electric force at a surface
Sep 21, 2022
Replies
3
Views
816
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Question regarding Laplace's Equation for regions with charges
Sep 21, 2022
Replies
11
Views
866
A
Approximating integrals of Bessel functions
Sep 21, 2022
Replies
2
Views
613
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Is electromotive force always equal to potential difference?
Sep 19, 2022
Replies
9
Views
957
A
Power consumed by electron gun
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Replies
26
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2K
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Defining the Forces from Magnetic Fields and Electric Fields
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Replies
4
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846
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How do I find the Direction of an induced electric field?
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Replies
10
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1K
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Is there traction force between moving electrons & copper wire?
Aug 28, 2022
Replies
6
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916
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Can visible light cause fluorescence in colorful objects?
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Replies
13
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1K
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Maxwell-Faraday Law & Stealth Magnets: Exploring EMF Induction
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Replies
27
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1K
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Why can't objects be seen if the wavelength is too long?
Aug 22, 2022
Replies
20
Views
1K
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Calculating Force on an Iron Object with Magnetic Field
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Replies
21
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2K
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Faraday induction in constant B field, with non-conduction wires
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Replies
2
Views
713
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Inductor questions (generate a voltage opposing the source voltage?)
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2
Replies
59
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3K
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Magnetic field strength of a stack of magnets
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Replies
7
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2K
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Can current flow in an open circuit?
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Replies
4
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1K
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Electric Field & Interplay between Coordinate Systems | DJ Griffiths
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Replies
8
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1K
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Two molecules with different polarizability in an EM field
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Replies
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926
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How an induced electric dipole vibrates with EM field
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10
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1K
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Rayleigh scattering -- What is the true reason for the color of the sky?
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2
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57
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3K
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A smaller cross-sectional area increases the resistance of a conductor?
Jul 23, 2022
Replies
7
Views
877
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Electric field of a moving charge that's abruptly stopped
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Replies
2
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946
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Helmholtz's theorem and charge density
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763
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A Physics Misconception with Gauss’ Law
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5
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3K
What Is the Coulomb Gauge in Electromagnetic Theory?
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22K
Ultra high magnetic fields using carbon nanotubes
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Replies
1
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10K
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Switch-to-lightbulb wire delay
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894
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What makes a plasma collisionless?
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Replies
1
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739
The difference between diamagnetism and paramagnetism?
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Replies
2
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10K
B
Are magnetic fields generated through radio frequencies?
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Replies
16
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1K
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Can an insulator reflect radiowaves?
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17
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991
Who defined the positive direction of the magnetic field?
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2
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35
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27K
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On the derivation of Child-Langmuir law
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1K
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How could electric susceptibilbility depend on position?
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Replies
3
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722
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How to emit 3.2 micrometer wavelength
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12
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1K
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Antenna inductance calculation (RFID applications, inductive coupling)
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Replies
6
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1K
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Exploring Newton's Third Law in an Imaginary Magnetic Field
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Replies
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979
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Dipole moment of a cylinder of uniform polarization
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1K
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When does the second uniqueness theorem apply?
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Replies
12
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802
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Derivation of the magnetic flux in coaxial cable
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Replies
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2K
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How does a ferromagnet increase the inductance of an inductor?
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Replies
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935
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Derivation of induced voltage in loop
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Replies
32
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2K
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A question about the Second Uniqueness Theorem in electrostatics
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Replies
11
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920
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Molten metal flow due to high currents
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Replies
10
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843
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The second uniqueness theorem in electrostatics
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Replies
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864
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Retarded potential of a moving point charge
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Replies
10
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1K
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Electric motor with increased load
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Replies
2
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711
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Coulomb's law for steady currents
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Replies
10
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988
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Does electron beam in empty space generate magnetic fields?
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Replies
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1K
A
Maxwell equation. Commuting time and spatial derivatives.
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Replies
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649
A
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Replies
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1K
I
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2
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42
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3K
B
How does the propagation of light work? How much time does it take?
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Replies
6
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807
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Calculation of electric flux on trapezoidal surface
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Replies
11
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1K
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Average Magnetic Field Between 2 Conducting Rods
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Replies
1
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713
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Force exerted by an iron core electromagnet on a ferrofluid
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Replies
2
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1K
A
Variation of Energy for Dielectrics (Zangwill's Electrodynamics)
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Replies
3
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702
I
Electric field is zero in the center of a spherical conductor
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2
Replies
44
Views
3K
I
Why is there no induced charge outside of the conductor?
Apr 26, 2022
Replies
10
Views
1K
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