Electromagnetism Forum

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Insights Symmetry Arguments and the Infinite Wire with a Current
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I How is Potential Difference Created across a Resistor?
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I Did Feynman make a mistake in the drawing of moving charges?
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I Are Maxwell's equations linearly dependent?
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3
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I Confused about electromotive forces
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10
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174
I Video: 'How electricity actually works'
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28
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412
I Preventing Corona Discharge from Wimshurst Machine
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6
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87
I Is the Poynting Vector Field the Only Factor in Energy Flow in Circuits?
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B Initial current in an RLC circuit
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22
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165
A NMR flip angle - angle of nutation
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2
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75
I Does displacement current create a magnetic field? And Lorentz force?
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10
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200
B The voltage between two points
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11
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292
B Antenna induction, oscillating circuit generating EM Waves
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6
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258
A Saha Equation In Plasma for Muons
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126
B What happens to a photon's energy when it is refracted?
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13
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358
Electron Spin and current-induced magnetic fields
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I Speed of magnetic flux propagation?
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204
B Possible movement of this magnet?
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I Question about Activating Solenoids that are facing each other
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I How to calculate the ring resonator radii via Laplace?
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152
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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I Getting the sign right with the work-energy theorem
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237
I How Do Eddy Current Dampers Work in Space Applications?
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388
A An electrolytic capacitor keeps charging by itself
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14
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I Force between opposing magnets
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402
I Does Diamagnetism Occur Even in a Constant Magnetic Field?
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I qv x B force in electron's proper frame
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Diamagnetism & levitation of pyrolytic graphite explanation
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I Can Electromagnetic Levitation Make an Entire Apparatus Go Skyward?
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247
I Can a permeable but non-magnetic rotor be used in an electric motor?
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401
I Effect of Fringe Fields for a Bending (Dipole) Magnet on Field Integral?
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198
I Why Do Some Theorists Claim Cosmic Inflation Dilutes Magnetic Monopoles?
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5
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371
I "Strange contradiction" that Maxwell found and resolved
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340
I An electrolytic capacitor charges by itself?
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3
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I How Does a Magnetic Repulsion Machine Work?
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5
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423
I Resonant cavity with non-resonant dielectric
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10
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569
I Physical approximation to inverse square law using magnet(s)
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12
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479
I How large is the volume of a photon interacting with matter?
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15
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612
I Maxwell's equations in the presence of matter -- Derivation
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460
A Finding potential of a dipole outside of a sphere
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2
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405
I Charging Capacitor with one terminal grounded
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16
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697
B Magnetic field produced by an electric current
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396
I Work done by electric field of an irregularly shaped conductor
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3
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585
B How can scalars like voltage, impedance, etc. be added like vectors?
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17
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624
I Mutual inductance in a transformer
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16
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I How to use geometrical symmetries -- general advice? (Vector potential)
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2
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372
I Reason for Opposite Signs for Terms in Faraday's Law and Ampere's Law
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15
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825
I Quadrupole moment tensor calculation for ellipsoid
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3
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435
I Mutual inductance of bifilar winding, vs transmission line parameter
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4
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382
I Where is the lost energy in this example?
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10
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690
Inducing EMF Through a Coil: Understanding Flux
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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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516
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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487
I Do the plates of the capacitor exert a force on each other?
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21
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729
B Understanding magnetic flux change during the falling of magnet
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433
B Changing magnetic polarity of an electromagnet
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10
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660
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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470
B LC resonance with high Q factor, Inductor with non magnetic core
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509
B Inductive Reactance of Solenoid with Solid Metal Core With respect to frquency
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I Question about Field Strength of Solenoid Positioned Near a Magnet
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9
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543
I Resistance and specific resistance relationships
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16
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758
B What's the difference between these two curves for AC Generator?
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11
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A Ponderomotive force and conservation of momentum
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424
I Capacitor connected to voltage source, vary plate separation
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9
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586
I Structural difference between soft and hard ferromagnets
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4
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679
I Do electric currents depend on the frame of reference?
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5
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505
I Simple electromagnetic wave including delay
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B Current-carrying coil and solenoid
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512
I Generating Divergence Equation In Cylindrical Coordinates
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3
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581
I Is this solenoid / permanent magnet configuration possible?
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5
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520
B Can I use this method to charge a metal sphere?
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9
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616
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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767
I Problems in classical electrodynamics: Only for point-like particles?
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515
I Electrical breakdown in air in the presence of a single charge
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618
A Visualising visible light Fluorescence
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629
I Light intensity required to shine a light through an opaque object
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22
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1K
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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6
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1K
B Symmetry regarding induced potentials?
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609
I What is the ideal fluid and setup for observing Magnetohydrodynamics?
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600
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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I Current through U-wire (rail gun): Violation of (naive) conservation of momentum?
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A Identifying Magnet Grade for FEMM Simulation: Neodymium Cylinder Magnets
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A Electric field of infinite sheet with time dependent charge
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22
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I What causes skin effect in AC currents?
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2
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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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753
I Geometry of Magnetic field lines as they approach a magnet pole?
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I When to properly use "voltage"
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I Railgun: Significant magnetic field where projectile is?
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