Electromagnetism Forum

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Insights Symmetry Arguments and the Infinite Wire with a Current
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5K
Undergrad How does the geometry of magnetic bodies influence torque?
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2K
High School Motor building help needed please!
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3
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300
Undergrad The effect of a radio wave on an electron
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4K
Graduate Spacing between metal sheet and dielectric radome for best RCS
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434
Graduate Electron mass without B-field: best precision?
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2
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509
Undergrad Net magnetic force in discontinuous circuits?
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6
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976
Undergrad Magnetic Resonance physics question: RF pulse role and 'in-phase'
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16
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4K
Undergrad What physical quantity has dimension [ML⁻³T⁻²] in electromagnetism?
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23
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3K
High School Confusion about one of Maxwell's equations
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11
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2K
Undergrad How does this configuration not create E field inside the conductor?
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9
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945
Graduate Practical demo - Ferromagnetic attraction at interpole boundary
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Undergrad Diodes and low grade thermal energy harvesting
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13
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1K
High School Homemade DC motor not working! Please help
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5
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750
Graduate An electrolytic capacitor keeps charging by itself
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15
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3K
Undergrad Small question about constantly accelerating charges
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2K
Undergrad Expanding loop torque division
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3
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767
Graduate Horizontal component of the electric field of an infinite uniformly charged plane
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9K
Undergrad Electric Field of Uniformly Charged Infinite Plane
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6
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1K
Graduate Infinite scaling limit of an elliptic charged surface
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5
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938
Undergrad The Electric Displacement, ##\mathbf D##
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2
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967
Undergrad Can nested solenoids trap particles?
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12
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2K
High School Electric Fields inside Conductors & Gauss' Law
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2K
Undergrad Electron in a microwave cavity
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Undergrad Colors in a plasma globe
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Undergrad Inducing EMF Through a Coil: Understanding Flux
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25K
High School Thought Experiment on Charge Carriers and Electrical Conduction
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2K
Undergrad Mechanism of Energy Conservation in Zero-Amplitude Sum of EM Waveforms
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21
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4K
Undergrad What determines if wave components are independent vs coherent?
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3
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1K
Undergrad Does a Point Charge in Classical Electromagnetism Possess Self Energy?
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5K
Graduate 3D rendering of electric field lines of a swiftly moving charge
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2K
High School Analog power supply output question
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5K
Graduate Screwy AAA Battery
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7
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1K
Undergrad Varying resistance readings depending on how I connect my meter
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17
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2K
Undergrad Instantaneous electric field solved by extended electrodynamics?
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2K
Graduate Reflections at the source point of a transmission line
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1K
Undergrad Ampere-Maxwell law seems to contradict causality?
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3
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1K
High School Generator shaft rotation through spring and magnet (Is this feasible in Physics?)
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13
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4K
High School Do Electrons Completely Leave a Capacitor at T/4 in an LC Circuit?
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1K
Undergrad Paradox of Superconductivity
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2K
Undergrad How to picture the vector potential?
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3
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1K
Undergrad Griffith, Electrodynamics, 4th Edition, Example 4.8. (Second part)
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1K
Undergrad Linear generator prototype
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22
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2K
Undergrad Coulomb gauge implies instantaneous radial electric field?
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2K
Undergrad Does Poisson's equation hold due to vector potential cancellation?
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2K
Undergrad Griffith, Electrodynamics, 4th Edition, Example 4.8. (First part)
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2K
Undergrad Gauss' law seems to imply instantaneous electric field propagation
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3K
Undergrad Do electron density waves accompany EM waves in coaxial cables?
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1K
Graduate Free surface problem in electrohydrodynamics
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3K
High School Applying the Gauss (1835) formula for force between 2 parallel DC currents
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1K
Undergrad Maxwell stress tensor
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2K
Undergrad Off resonance driving of a MW/RF cavity
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9
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1K
Undergrad Why measure the speed of light in one direction?
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1K
Undergrad Motional EMF in Faraday disc, co-rotating magnet axial mean flux
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2K
Undergrad E field in a wire
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1K
Undergrad Why isn’t there an equation to describe how energy is redistributed by destructive interference of an electromagnetic wave?
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2K
Undergrad Why are Maxwell's equations and the Lorentz force "so different"?
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9
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4K
High School What is the difference between B and H?
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14
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4K
Undergrad Lightning rods -- how confusing can they be?
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3K
Undergrad Applying Lorentz Force correctly
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Undergrad Shielding behavior of a steel cuboid in a DC magnetic field
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Undergrad Extending a magnetic flux field from the tip of a rod
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High School (Electric) current is not a vector quantity
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28
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3K
Undergrad Explaining the magnetic (cable) paradox
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High School EMF induced by Bar Magnet falling through a Coil
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Undergrad Does destructive interference of an electromagnetic wave create negative energy?
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Graduate What is Exponent b in Voltage-to-Area Flaw Relationships?
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Undergrad Capacitor surface charge movement current, relativistic effects
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2K
Undergrad "Best" software for emotor simulation?
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2K
Undergrad Charge movement relative to magnetic field frame dependence/invariance
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2K
Undergrad Permeability of Metglas and Propagation Velocity
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Undergrad Two ways of constructing electromagnetism, which is correct?
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Undergrad Why wouldn't two inductors provide a lag of 180 degrees?
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Undergrad Electric field in two dimensions in an electromagnetic wave
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2K
High School How to use magnets in levitation?
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2K
High School Single phase induction motor Torque under increased frequency and Same Current
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4
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3K
Undergrad How can magnetic fields contain energy?
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4K
High School Not sure about the magnetic flux (phi) depending on a cosine function
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2K
High School Electric Field Direction: Are We Assuming a Universal Positive Frame?
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3K
Undergrad Magnetic field inside a capacitor
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4K
Graduate RLC oscillator vs class A or B amplifier for EM induction
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2K
Undergrad Discontinuity of Electric field
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3K
Undergrad Do curl/time dependent Maxwell's equations imply divergence equations?
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3K
Undergrad Magnetic dipole and a torque
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2K
Undergrad Electric field of ring at any point
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2K
High School Is Newton's third law getting violated here?
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Undergrad Magnetic Component Permeability vs Frequency Loss
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Undergrad Direction of magnetic force
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Undergrad Electrical breakdown in air in the presence of a single charge
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3K
Undergrad Is it possible to create an electromagnet to pull itself to Earth?
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Graduate Does a DC supplied wavy superconductor give off EM radiation?
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High School Generating Electricity in E bike under seat (No pedal)
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12
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3K
Undergrad Computing the capacitance of a strange material
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3
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2K
Undergrad Slowing down a moving electric charge
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5
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Undergrad Coulomb's law taken to the extreme
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44
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Undergrad Integral and differential forms of field equations
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16
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Undergrad Is it possible to apply Gauss' law to a Klein bottle?
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Undergrad Confused about work done on charge
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8
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2K
Undergrad Can the polarization bound charge density be expressed in vacuum by a wave function?
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4
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High School Confused regarding Electricity Basics; Helping Kid with Project
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11
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2K
Undergrad Antenna made from a pair of metal cones, radiation gain verses frequency.
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1
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2K