Electromagnetism Forum

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Undergrad Car Exhasut heat to electricity

  • ramonegumpert
  • · Replies 19 ·
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19

High School Electron Flow in Short-Circuited Battery: What to Expect?

  • nshamblin
  • · Replies 6 ·
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6

Graduate Can magnet fields deflect displacement currents?

  • kmarinas86
  • · Replies 7 ·
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7

Undergrad Forces on multiple cylindrical magnets stacked

  • julie827
  • · Replies 11 ·
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11

Undergrad Electric field in stored charges

  • lluke9
  • · Replies 3 ·
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3

High School Coil Winding: How to Layer Coil Turns

  • StephenD420
  • · Replies 19 ·
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19

Graduate Does a Rotating Bar Magnet Emit Magnetic Dipole Radiation?

  • quantumfireball
  • · Replies 2 ·
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2

Undergrad Phase Shift in RLC Circuit with Increased Inductance

  • Gavroy
  • · Replies 4 ·
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4

Graduate Gamma radiation photoelectric effect

  • Thundagere
  • · Replies 3 ·
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3

Undergrad Understanding Lecher Lines: FAQs

  • Gavroy
  • · Replies 1 ·
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1

Graduate Qausi-static displacement current (Purcell)

  • shooba
  • · Replies 1 ·
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1

Undergrad Electron movement in a stationary magnetic field

  • toppentech
  • · Replies 4 ·
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4

AC Supply from DC Transformer | Current/Voltage

  • Aman90
  • · Replies 1 ·
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1

High School Are Protons, Neutrons, and Electrons energy?

  • Gravilocity
  • · Replies 3 ·
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3

High School Identifying Charges Using a Pith-ball Electroscope?

  • Quarks.
  • · Replies 3 ·
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3

Undergrad Variable Frequency Generator question

  • Thundagere
  • · Replies 2 ·
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2

Undergrad Voltage difference = Infinity?

  • lluke9
  • · Replies 3 ·
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3

Undergrad Voltage of electrochemical cell

  • Gavroy
  • · Replies 1 ·
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1

Graduate Magnetic Propulsion in Salt Water

  • Hermanator
  • · Replies 6 ·
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6

Graduate Can Capacitors Create Specific Phase Shifts in DIY Three-Phase AC Systems?

  • StephenD420
  • · Replies 4 ·
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4

Undergrad Electromagnetic force question

  • Peter McKenna
  • · Replies 2 ·
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2

Graduate Strongest Magnetic Materials: Rare Earths and NdBFe

  • magnetics
  • · Replies 1 ·
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1

Undergrad Forces in a circle from similar charges?

  • thematrixiam
  • · Replies 6 ·
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6

Undergrad Natural Gas Pipe & Electric Field - Explained

  • u2_wa
  • · Replies 5 ·
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5

Graduate Is it possible to make water more diamagnetic?

  • IB Laker
  • · Replies 2 ·
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2

Undergrad Magnetic Field From a Solenoid - Biot-Savart Law

  • fonz
  • · Replies 2 ·
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2

Graduate Confusion about Gauss' law differential form

  • constfang
  • · Replies 2 ·
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2

Undergrad Electric current transmitted over great distances.

  • siddharth5129
  • · Replies 12 ·
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12

Undergrad How would you calculate the amplitude of an electromagnetic wave?

  • warfreak131
  • · Replies 3 ·
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3

Undergrad Gauss's Law - Irregular Surfaces

  • Rarugged
  • · Replies 4 ·
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4

Undergrad Question about Natural Frequency and Resonance

  • Thundagere
  • · Replies 7 ·
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7

Undergrad A very stupid question about electricity for a project being done just for fun

  • AdamCH
  • · Replies 6 ·
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6

Undergrad Kirchhoff's Loop Rule: Example 26.4 Explained

  • PainterGuy
  • · Replies 4 ·
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4

High School Proton and electron simple conceptual question. pretty basic,

  • elegysix
  • · Replies 6 ·
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6

High School Rock that gives off static charge when struck

  • michael60622
  • · Replies 5 ·
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5

Graduate Physical interpretation of conductivity with electromagnetic waves?

  • randomafk
  • · Replies 2 ·
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2

Undergrad Electric Field Lines: Intersection & Equilibrium

  • cragar
  • · Replies 4 ·
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4

Graduate Conservation of angular momentum - tetherball vs charged particle

  • gabdolce
  • · Replies 9 ·
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9

Undergrad Why velocity affects electromagnetic induction?

  • Thundagere
  • · Replies 1 ·
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1

Graduate Lagrangian for electromagnetic field

  • eoghan
  • · Replies 2 ·
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2

Graduate Does constant magnetic field around a wire induce an electric field?

  • lowlyEEugrad
  • · Replies 14 ·
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14

Graduate Neumann Boundary Conditions question

  • VortexLattice
  • · Replies 5 ·
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5

Undergrad Magnetic bullet fired through a coil can fire another bullet?

  • simplex
  • · Replies 2 ·
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2

Graduate Electron beam/atmosphere interaction

  • msquared
  • · Replies 7 ·
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7

Graduate General question - how much current is in a simple spark?

  • elegysix
  • · Replies 2 ·
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2

Graduate Back EMF: Explaining the Counter Voltage Induced by Change in Current

  • randomafk
  • · Replies 4 ·
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4

High School Explaining Electric Spark in Microwave with Foil-Wrapped Hamburger

  • GunUltimateID
  • · Replies 2 ·
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2

Undergrad Is the Electric Field from an Infinite Plane of Charge Constant with Distance?

  • tomwilliam
  • · Replies 8 ·
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8

Undergrad Electro-magnetic Radiation and Cresting Amplitude

  • Marc Meilleur
  • · Replies 1 ·
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1

Graduate Positive and neagtive charge carriers current

  • lufc88
  • · Replies 9 ·
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9

Undergrad Magnetic flux through a closed surface

  • tomwilliam
  • · Replies 2 ·
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2

Graduate Conceptual Question: Light VS Electro-Magnetic Induction

  • FireStorm000
  • · Replies 14 ·
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14

Undergrad Question about Flux through a closed surface

  • Hoserman117
  • · Replies 5 ·
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5

Graduate How Do You Calculate Holding Current for a Spark?

  • a2009
  • · Replies 3 ·
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3

Undergrad How to determine harmony frequency in sound?

  • oem7110
  • · Replies 14 ·
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14

Graduate How does charge transport against the electric field in a battery circuit?

  • jparke
  • · Replies 20 ·
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20

High School Can a Magnetic Dipole Form a Circle?

  • LaPXL8R
  • · Replies 9 ·
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9

Graduate Do Current Loops Really Radiate Despite Accelerating Charges?

  • cragar
  • · Replies 16 ·
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16

Undergrad Dielectric constant refractive index relationship

  • tomas632
  • · Replies 3 ·
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3

Graduate Why does the magnetic moment of a nucleon line up with a uniform magnetic field?

  • enfield
  • · Replies 1 ·
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1

Undergrad How Electromagnetic Waves Pass Through Holes

  • jonlg_uk
  • · Replies 32 ·
2
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32

Undergrad Please explain - total electic field Ec + En within the coils must be zero

  • bksree
  • · Replies 3 ·
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3

Graduate Capacitor Charge Drain and Surge Impedance

  • kmarinas86
  • · Replies 2 ·
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2

Undergrad Getting weird formula for Capacitance

  • lluke9
  • · Replies 5 ·
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5

High School Is there any rule of solving problems, having some values very small

  • Sumedh
  • · Replies 3 ·
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3

Undergrad What does the slope of a semilog plot indicate?

  • ShayanJ
  • · Replies 4 ·
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4

High School Calculation of Angular Frequency

  • yadunandan
  • · Replies 7 ·
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7

Undergrad What is the cause for diamagnetism and other types of magnetism?

  • SandeshPhy
  • · Replies 3 ·
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3

Undergrad How Can I Calculate the Energy Requirement for a Lateral Solenoid?

  • Swifters
  • · Replies 1 ·
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1

Graduate Current Density of Circular Current Loop (Jackson)

  • gitano
  • · Replies 7 ·
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7

Undergrad Accelerating Current: Does Bending a Wire Produce EM Radiation?

  • SandeshPhy
  • · Replies 4 ·
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4

Graduate How much energy is released from an electron-positron annihilation?

  • thomas9459
  • · Replies 6 ·
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6

Graduate Energy in the Magnetic field of a moving point charge, simple question

  • elegysix
  • · Replies 6 ·
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6

Graduate Energy radiated by an electron

  • vipinpsharma
  • · Replies 24 ·
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24

High School Why magnet cannot attract aluminium?

  • oem7110
  • · Replies 2 ·
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2

Can an electron have a mind of its own?

  • phydev
  • · Replies 8 ·
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8

Undergrad Voltage Difference and the Body: Why Hand-to-Hand Shocks Can Be Deadly

  • eurekameh
  • · Replies 7 ·
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7

Undergrad Can electromagnets be used to eliminate weight force in levitation?

  • gym_junkie32
  • · Replies 7 ·
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7

Undergrad How to determine where the B feild starts

  • aglo6509
  • · Replies 1 ·
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1

Undergrad How can an antenna capture + receive EM Waves ?

  • JPC
  • · Replies 19 ·
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19

Undergrad Need help to get equation of Kirchhoff

  • simplewhite
  • · Replies 1 ·
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1

High School What is the physical size of an electron?

  • rorix_bw
  • · Replies 38 ·
2
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38

Graduate No problem, I appreciate your attention to detail!

  • phydev
  • · Replies 25 ·
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25

Graduate Dispersion vs. time-dependence

  • Niles
  • · Replies 1 ·
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1

Undergrad Complex analysis in electrical circuits

  • nhmllr
  • · Replies 4 ·
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4

Graduate Questions about EM wave in material

  • kirk404
  • · Replies 1 ·
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1

Undergrad Motion of wire in B field -vs- motion of electrons in helmholtz coils

  • motorman
  • · Replies 3 ·
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3

Graduate B & E Waves: Symmetrical or Non-Symmetrical?

  • jmatejka
  • · Replies 3 ·
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3

Undergrad Effect of the magnetic field on a charged object's inertia.

  • Envergure
  • · Replies 5 ·
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5

Undergrad Calculating Electric Field at (x,0,0) Due to Two Point Charges

  • Rasalhague
  • · Replies 2 ·
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2

Graduate Dielectric materials in Optical Traps

  • frug
  • · Replies 1 ·
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1

Undergrad Energy Loss From Permanent Magnets

  • Eugbug
  • · Replies 3 ·
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3

Graduate Momentum conservation in photoelectric effect

  • Reshma
  • · Replies 7 ·
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7

Undergrad Conservation of energy and magnets

  • nhmllr
  • · Replies 6 ·
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6

Undergrad Required Electric Motor Torque For Sm Car

  • mdinitto
  • · Replies 2 ·
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2

Undergrad What Causes the Lorentz Force in Electromagnetism?

  • Gavroy
  • · Replies 3 ·
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3

Graduate Taking current from an insulator?

  • d.sonali20
  • · Replies 5 ·
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5

Undergrad Electron in magnetic field and cathode ray tube

  • arul_k
  • · Replies 7 ·
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7

Graduate Concept/Derivation for total electric potential energy of two concentric spheres

  • Sumedh
  • · Replies 2 ·
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2

High School Any device to measure sound frequency below 20 Hz?

  • oem7110
  • · Replies 6 ·
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6