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Graduate Why don't high-voltage electrons in a metal wire escape?

  • Mayan Fung
  • · Replies 42 ·
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Graduate Understanding frequency calculations of an object (e.g human body)

  • Nathan M
  • · Replies 2 ·
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Graduate Strange approach to the line-fed slot antenna electromagnetic problem

  • Unconscious
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2

Undergrad Understanding the Phase Difference Between Voltage & Current in a Circuit

  • Kaushik
  • · Replies 7 ·
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7

Graduate Fourier transform of Maxwell's equations

  • thaiqi
  • · Replies 7 ·
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7

Undergrad Parallel Plate Fields: Questions & Answers

  • aspodkfpo
  • · Replies 6 ·
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6

Graduate Can the charge conservation law be derived from Maxwell equations?

  • timeant
  • · Replies 7 ·
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7

Graduate Electric Field inside the material of a hollow conducting sphere

  • preachingpirate24
  • · Replies 11 ·
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11

Undergrad Is Capacitor Voltage Curved Like a Hyperbola?

  • vector222
  • · Replies 3 ·
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3

Undergrad Direction of an ionized electron's travel

  • kelly0303
  • · Replies 11 ·
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11

Graduate Is the Frequency of Current Noise Voltage Dependent?

  • jonlg_uk
  • · Replies 3 ·
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Graduate What is the meaning of electric field "immediately outside the surface"?

  • Tony Hau
  • · Replies 14 ·
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Graduate High Frequency Linear Array BeamForming

  • nauman
  • · Replies 31 ·
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Graduate Maxwell distributions and average, RMS, and most probable speeds

  • rtareen
  • · Replies 3 ·
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Undergrad EMF induced in a straight current-carrying conductor

  • shldon
  • · Replies 9 ·
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9

Undergrad Why the current is maximum When Rᵉˣᵗᵉʳⁿᵃˡ=Rᴵⁿᵗᵉʳⁿᵃˡ?

  • Frigus
  • · Replies 23 ·
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23

Graduate Magnetic Flux outside of a long solenoid

  • lelouch_v1
  • · Replies 2 ·
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2

Undergrad Continuity equation of the electric field

  • speaknow
  • · Replies 4 ·
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4

Undergrad Trying to better understand the physics of electrical earth ground

  • FrankJ777
  • · Replies 18 ·
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18

Graduate Calculating the magnetic field in this seemingly simple case?

  • Abdullah Almosalami
  • · Replies 3 ·
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3

Graduate Is there a difference between Faraday’s induction experiments?

  • cg0303
  • · Replies 23 ·
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Graduate Frequency of EM waves produced by linearly accelerating charges

  • cg0303
  • · Replies 20 ·
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20

Graduate What Factors Influence Low Leakage Flux in Transformers?

  • jaumzaum
  • · Replies 7 ·
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Graduate Electric Field of Point Charge at y=r and an Infinitely Long Cylinder

  • MrBlank
  • · Replies 9 ·
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9

Graduate What is the current during BaTiO3 voltage breakdown?

  • HelloCthulhu
  • · Replies 1 ·
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Undergrad Does potential drop when a charge flows through a wire w/ 0 resistance?

  • Kaushik
  • · Replies 7 ·
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7

High School Understanding the Friis Transmission Equation

  • kevinisfrom
  • · Replies 14 ·
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14

Graduate Calculating the energy required to spool a turbocharger

  • devon1996
  • · Replies 2 ·
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2

High School Are electric circuits considered as electrostatics or electrodynamics?

  • Anti Hydrogen
  • · Replies 6 ·
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6

Graduate An electron inside a Faraday cage

  • etotheipi
  • · Replies 13 ·
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Graduate Force derived from magnetic energy of a current carrying spring

  • etotheipi
  • · Replies 8 ·
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8

Graduate Force on a capacitor plate as the derivative of the energy -- is it a fluke?

  • etotheipi
  • · Replies 8 ·
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8

Undergrad Is it possible to measure the general amount of electromagnetic field

  • danielhaish
  • · Replies 11 ·
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11

Graduate Impedances for RLC circuits in the limit of zero frequency

  • etotheipi
  • · Replies 18 ·
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18

Graduate How Is the Energy Density of EM Waves Related to Capacitors and Inductors?

  • cg0303
  • · Replies 6 ·
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Graduate Cases when Ampere's circuital law fails to hold

  • gumthakka
  • · Replies 6 ·
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6

Undergrad Do any electric lights have statistical lifetimes X~Exp(λ)?

  • Combinatus
  • · Replies 3 ·
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Undergrad Electrostatic and gravitational forces

  • Ranku
  • · Replies 7 ·
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Graduate Maxwell's equations for TEM mode

  • Young_Scientist23
  • · Replies 2 ·
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2

High School Light as an electromagnetic wave

  • Aeronautic Freek
  • · Replies 2 ·
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Graduate What is the origin of magnetic potential energy?

  • KDPhysics
  • · Replies 15 ·
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15

Undergrad If a mosquito zapper works as a capacitor

  • feynman1
  • · Replies 1 ·
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Undergrad Energy transfer and conservation cases for pendulum motion and EM wave

  • anuttarasammyak
  • · Replies 10 ·
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Undergrad How is force applied? Is resistance or load necessary for force to exist?

  • phoesix
  • · Replies 7 ·
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Undergrad Does Rolling Resistance Change with Speed on Polyurethane Wheels?

  • e2m2a
  • · Replies 10 ·
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10

Graduate Are Electromagnetic Waves Always Transverse?

  • Delta2
  • · Replies 8 ·
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8

Undergrad Visualizing the charge distribution in COMSOL

  • feynman1
  • · Replies 12 ·
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Graduate Induced/bound charges in conductors and dielectrics

  • feynman1
  • · Replies 5 ·
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Graduate Replacing a discrete charge density with a continuous one

  • dipole
  • · Replies 16 ·
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Cylindrical Halbach array with a vertical magnetic field?

  • rayjbryant
  • · Replies 18 ·
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Undergrad Equation for the Internal Resistance of a Battery

  • MrNewton
  • · Replies 5 ·
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Undergrad What happens to the capacitor and dielectric when an old phone charges faster?

  • feynman1
  • · Replies 21 ·
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Graduate How are 2D electrostatic modules approximated in COMSOL?

  • feynman1
  • · Replies 3 ·
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Graduate Minimium diameter of an electromagnetic beam in terms of wavelength

  • Uchida
  • · Replies 1 ·
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Graduate Charge Inside a Cavity in a Conductor

  • Luke Tan
  • · Replies 6 ·
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6

Graduate Deflection of magnetic dipoles by a magnetic field

  • snoopies622
  • · Replies 2 ·
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Undergrad Intuition about electromotive force (EMF)

  • Kaushik
  • · Replies 10 ·
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10

Undergrad Aerodynamics - why wings create lift - current vs historical discussions

  • zanick
  • · Replies 140 ·
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Graduate Deflection of a Magnet in an Inhomogenous Magnetic Field

  • Hornbein
  • · Replies 5 ·
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Graduate Does the theory of electromagnetism have this fundamental problem?

  • francis20520
  • · Replies 8 ·
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8

Graduate Does moving an insulating cylinder produce a magnetic field?

  • lelouch_v1
  • · Replies 5 ·
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Undergrad Newton's Shell Theorem and charge

  • DaveC426913
  • · Replies 26 ·
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Undergrad Force acting on a current carrying conductor within a magnetic field

  • sss
  • · Replies 2 ·
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Undergrad Why is the net flux through a closed surface equal to zero?

  • Frigus
  • · Replies 25 ·
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Graduate Understanding Electrical Potential Energy of a charge distribution

  • iochoa2016
  • · Replies 5 ·
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5

Graduate Calculating E-field Through Layers w/ Diff. Permittivities & Conductivities

  • ThomasAnderson
  • · Replies 3 ·
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Undergrad Electromagnetic induction (finding ΔΦ).

  • KarlsShwarzschild
  • · Replies 3 ·
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3

High School How do you calculate power from a magnet in a coil?

  • Gemcutter
  • · Replies 4 ·
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4

Undergrad Electromagnetic radiation effect on health.

  • Jeff97
  • · Replies 2 ·
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Undergrad What happens to surface charges when conductors/dielectrics touch?

  • feynman1
  • · Replies 18 ·
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Graduate How to Recognize Split Electric Fields - Comments

  • rude man
  • · Replies 130 ·
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Graduate Maxwell's equations and time-harmonic solutions

  • fog37
  • · Replies 4 ·
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Graduate Current and stationary charges

  • gumthakka
  • · Replies 8 ·
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8

Graduate Properties of symmetric magnetic field around ##Z## axis (cylinder)

  • sagigever
  • · Replies 4 ·
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4

Undergrad Is Visible Light Really Electromagnetic Radiation?

  • bhobba
  • · Replies 12 ·
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12

Undergrad How does the Hall effect interact with the iLB force in a copper wire?

  • feynman1
  • · Replies 24 ·
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Undergrad Understanding Op-Amp negative feedback

  • Kaguro
  • · Replies 18 ·
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18

Undergrad How can electrons flow all the way through the circuit?

  • Adesh
  • · Replies 21 ·
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21

Undergrad Why Do Capacitor Plates Have Equal and Opposite Charges?

  • feynman1
  • · Replies 103 ·
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Graduate Flux Terminology: Scalar Flux vs. Flux Density in Different Contexts

  • etotheipi
  • · Replies 2 ·
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2

Undergrad Sudden polarity reversal in opposing permanent magnets?

  • sw20
  • · Replies 6 ·
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6

Graduate Demo of the I-V equation of an inductor

  • mcastillo356
  • · Replies 4 ·
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4

High School How do the magnetic strengths of compasses compare to those of magnets?

  • feynman1
  • · Replies 17 ·
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Undergrad Non-circular motion of a particle in a perpendicular constant magnetic field

  • feynman1
  • · Replies 5 ·
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5

Undergrad Current is not continuous in RC circuits?

  • feynman1
  • · Replies 28 ·
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28

Undergrad DIY Electromagnetic Induction Experiment

  • KDPhysics
  • · Replies 2 ·
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2

Graduate Tuning fork frequency equation

  • PainterGuy
  • · Replies 4 ·
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4

Graduate Force & energy in cutting and stretching magnetic field lines?

  • Luke2642
  • · Replies 3 ·
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3

Graduate Arcing during water bridge, which dielectric breaks down first?

  • HelloCthulhu
  • · Replies 1 ·
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1

Graduate What are the implications of considering infinite first derivatives in circuits?

  • mcastillo356
  • · Replies 21 ·
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21

Undergrad Why does current need to vary in an inductor?

  • mcastillo356
  • · Replies 9 ·
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9

Graduate Electric current is not a vector while electric current density is a vector

  • feynman1
  • · Replies 29 ·
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Graduate How Does Magnetic Force Affect a Falling Coil's Velocity and Kinetic Energy?

  • jaumzaum
  • · Replies 10 ·
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10

Graduate !Measuring Currents in a Circuit w/ Semiconductor

  • Dor
  • · Replies 3 ·
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3

Undergrad Resonant cavity and circuit analysis

  • dRic2
  • · Replies 4 ·
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4

Undergrad Do moving electrons also create an E-field?

  • troglodyte
  • · Replies 13 ·
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13

High School Electromotive force when current is alternating

  • mcastillo356
  • · Replies 11 ·
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Graduate Image charge of source charge in spherical cavity

  • feynman1
  • · Replies 10 ·
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Graduate Vector field equality Curl Proof of Moving Magnet & Conductor Problem

  • tade
  • · Replies 54 ·
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Undergrad Average of the B-field over a volume and surface integrals

  • Aaron121
  • · Replies 2 ·
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