Electromagnetism Forum

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Insights Symmetry Arguments and the Infinite Wire with a Current
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B Dimensional Spin Inspection
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I Equality of Gravitational and Electrostatic force
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10
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I How is Potential Difference Created across a Resistor?
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21
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I Did Feynman make a mistake in the drawing of moving charges?
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6
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185
I Are Maxwell's equations linearly dependent?
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3
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202
I Confused about electromotive forces
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10
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210
I Video: 'How electricity actually works'
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28
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459
I Preventing Corona Discharge from Wimshurst Machine
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6
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114
I Is the Poynting Vector Field the Only Factor in Energy Flow in Circuits?
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16
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1K
B Initial current in an RLC circuit
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22
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212
A NMR flip angle - angle of nutation
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2
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107
I Does displacement current create a magnetic field? And Lorentz force?
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10
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229
B The voltage between two points
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11
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322
B Antenna induction, oscillating circuit generating EM Waves
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6
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287
A Saha Equation In Plasma for Muons
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153
B What happens to a photon's energy when it is refracted?
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13
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398
Electron Spin and current-induced magnetic fields
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I Speed of magnetic flux propagation?
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3
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233
B Possible movement of this magnet?
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209
I Question about Activating Solenoids that are facing each other
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188
I How to calculate the ring resonator radii via Laplace?
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180
I Iron core barely boosting field strength
2
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I Problem with one of the premises in electrostatic pressure theory
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267
I Getting the sign right with the work-energy theorem
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262
I How Do Eddy Current Dampers Work in Space Applications?
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4
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423
A An electrolytic capacitor keeps charging by itself
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14
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590
I Force between opposing magnets
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426
I Does Diamagnetism Occur Even in a Constant Magnetic Field?
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701
I Qv x B force in electron's proper frame
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6
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314
Diamagnetism & levitation of pyrolytic graphite explanation
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I Can Electromagnetic Levitation Make an Entire Apparatus Go Skyward?
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3
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266
I Can a permeable but non-magnetic rotor be used in an electric motor?
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426
I Effect of Fringe Fields for a Bending (Dipole) Magnet on Field Integral?
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228
I Why Do Some Theorists Claim Cosmic Inflation Dilutes Magnetic Monopoles?
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5
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I "Strange contradiction" that Maxwell found and resolved
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368
I An electrolytic capacitor charges by itself?
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3
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2K
I How Does a Magnetic Repulsion Machine Work?
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5
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450
I Resonant cavity with non-resonant dielectric
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10
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598
I Physical approximation to inverse square law using magnet(s)
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12
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507
I How large is the volume of a photon interacting with matter?
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15
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641
I Maxwell's equations in the presence of matter -- Derivation
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484
A Finding potential of a dipole outside of a sphere
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2
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440
I Charging Capacitor with one terminal grounded
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16
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736
B Magnetic field produced by an electric current
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422
I Work done by electric field of an irregularly shaped conductor
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3
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B How can scalars like voltage, impedance, etc. be added like vectors?
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17
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666
I Mutual inductance in a transformer
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16
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1K
I How to use geometrical symmetries -- general advice? (Vector potential)
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2
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395
I Reason for Opposite Signs for Terms in Faraday's Law and Ampere's Law
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15
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860
I Quadrupole moment tensor calculation for ellipsoid
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3
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465
I Mutual inductance of bifilar winding, vs transmission line parameter
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4
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412
I Where is the lost energy in this example?
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10
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715
Inducing EMF Through a Coil: Understanding Flux
6
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191
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15K
I Work to move a point charge from infinity to the centre of a charge distribution
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4
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541
I Conservation of charge in the Universe
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24
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I How do we know that both plates of a capacitor have the same charge?
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8
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B Single phase induction motor Torque under increased frequency and Same Current
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2
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510
I Do the plates of the capacitor exert a force on each other?
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21
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759
B Understanding magnetic flux change during the falling of magnet
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457
B Changing magnetic polarity of an electromagnet
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I Understanding dissipation of energy in a resistor through the Drude model
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1K
I Question about the current through a strong insulator
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2
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490
B LC resonance with high Q factor, Inductor with non magnetic core
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4
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534
B Inductive Reactance of Solenoid with Solid Metal Core With respect to frquency
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597
I Question about Field Strength of Solenoid Positioned Near a Magnet
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9
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568
I Resistance and specific resistance relationships
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16
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791
B What's the difference between these two curves for AC Generator?
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11
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623
A Ponderomotive force and conservation of momentum
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444
I Capacitor connected to voltage source, vary plate separation
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9
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I Structural difference between soft and hard ferromagnets
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4
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707
I Do electric currents depend on the frame of reference?
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5
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535
I Simple electromagnetic wave including delay
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B Current-carrying coil and solenoid
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544
I Generating Divergence Equation In Cylindrical Coordinates
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3
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610
I Is this solenoid / permanent magnet configuration possible?
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5
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544
B Can I use this method to charge a metal sphere?
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9
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641
I Alternating current in a perfect conductor
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11
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I What causes the unexpected annihilation point in the Magic-Tee configuration?
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15
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I Problems in classical electrodynamics: Only for point-like particles?
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543
I Electrical breakdown in air in the presence of a single charge
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3
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646
A Visualising visible light Fluorescence
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6
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653
I Light intensity required to shine a light through an opaque object
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22
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2K
B Definition of ground potential in infinite sheet charge distributions
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A Proving an equation in a book about Periodic Structures
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1K
B Symmetry regarding induced potentials?
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640
I What is the ideal fluid and setup for observing Magnetohydrodynamics?
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629
B Electromagnetic radiation interacting with a magnetic field
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I Permanent Magnetic Dipole in an electromagnetic field
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B Is the Direction of Magnetic Fields Truly Conventional?
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A Magnetization and magnet poles
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I How to Measure the Energy of an Electromagnetic Wave?
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I Magnetic field as result of length contraction
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I Which law defines the AC inducing voltage in the inductor?
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25
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1K
I Current through U-wire (rail gun): Violation of (naive) conservation of momentum?
2
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61
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A Identifying Magnet Grade for FEMM Simulation: Neodymium Cylinder Magnets
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5
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913
A Electric field of infinite sheet with time dependent charge
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I What causes skin effect in AC currents?
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779
B Measuring electric field vs magnetic field
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I Does B=0 at points out of the plane containing and normal to a point current I?
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8
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779
I Geometry of Magnetic field lines as they approach a magnet pole?
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28
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