Electromagnetism Forum

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High School Unravelling the Mystery of Touch-Activated Lamps

  • T@P
  • · Replies 3 ·
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3

Canadian light source electromagnetic radiation

  • kiwikiwi79
  • · Replies 1 ·
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1

Undergrad What Is the Role of Flux in Electromagnetic Induction?

  • Geoffrey F. Miller
  • · Replies 1 ·
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1

Undergrad Electric Field: Q, Epsilon 0, and the Inverse Square Law

  • fdarkangel
  • · Replies 16 ·
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16

Graduate Force/ enegry equations for maglev (electromangetism)

  • richard cash
  • · Replies 1 ·
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1

Undergrad Electron & proton charges precisely equal

  • fastartcee
  • · Replies 6 ·
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6

High School People who can let electricity flows through their bodies

  • maxpayne_lhp
  • · Replies 20 ·
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20

High School Magnetic Field affect on charges

  • Chaotic Boredom
  • · Replies 1 ·
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1

Undergrad Question about electromagnetism and photons

  • hcs
  • · Replies 3 ·
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3

Graduate How would constant acceleration affect a Hohmann Transfer Orbit?

  • Sojourner01
  • · Replies 2 ·
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2

High School Why are temperature/voltage/etc not measured all in KJ?

  • hexhunter
  • · Replies 8 ·
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8

High School What causes the formation of magnetic poles in a bar magnet?

  • Hellstorm
  • · Replies 6 ·
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6

Graduate Why Does a Charged Disk Generate a Non-Zero Electric Field at Its Center?

  • hell-hawk
  • · Replies 1 ·
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1

Graduate Calculating the Coulomb Force between 2 charges in space

  • maverick280857
  • · Replies 6 ·
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6

Undergrad What is the magnetic field in a loop with current?

  • daveed
  • · Replies 1 ·
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1

High School What is the Formula for Determining the Strength of an Electromagnet?

  • mrjeffy321
  • · Replies 9 ·
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9

Undergrad Calculating Moment of Inertia of a magnet

  • Jdo300
  • · Replies 5 ·
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5

Undergrad Electromagnetism to deviate the path of an incoming bullet

  • Qyamat
  • · Replies 6 ·
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6

Undergrad Maxwell Relations (not equations)

  • eddo
  • · Replies 2 ·
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2

Undergrad A good EM book that isn't too detailed

  • Hoofbeat
  • · Replies 4 ·
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4

Graduate The Mysterious Aether: Maxwell's Equations and the XYZ Axes

  • jenst
  • · Replies 8 ·
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8

Undergrad Possibility of an electric flame thrower?

  • relativelyslow
  • · Replies 3 ·
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3

High School What is the name of the device used to measure ohms?

  • Geoffrey F. Miller
  • · Replies 10 ·
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10

Graduate What is the Potential on a Spherical Shell Due to an External Point Charge?

  • maverick280857
  • · Replies 2 ·
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2

Graduate Electric Field of a Pure Dipole(Math Stuff)

  • PowerWill
  • · Replies 5 ·
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5

Undergrad Understanding Electricity: The Relationship Between Magnets and Current

  • evthis
  • · Replies 3 ·
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3

Undergrad Can a Simple Copper Coil Device Provide Efficient EM Propulsion?

  • Mk
  • · Replies 5 ·
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5

Undergrad Calculating Potential of a Charged Plate: Figuring Out Fig. 23-1

  • scilover89
  • · Replies 3 ·
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3

Undergrad What Causes a Voltage in a Circuit with an LED and Filament Lamp?

  • Mrs Moggins
  • · Replies 4 ·
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4

Graduate Electro-conceptual questions about capacitors, electric fields, and circuitry

  • ethane
  • · Replies 12 ·
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12

Graduate Maxwell Equations and Waveguide: why only TE or TM wave and not TEM?

  • chingkui
  • · Replies 10 ·
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10

Graduate Verifying Answer to Wave Equation and Associated B Field

  • Hoofbeat
  • · Replies 3 ·
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3

Graduate Physical Explanation of Faraday's Law

  • Lyuokdea
  • · Replies 5 ·
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5

Undergrad What is a typical constant for air resistance in relation to velocity?

  • BigStelly
  • · Replies 1 ·
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1

High School What exactly is electric field?

  • scilover89
  • · Replies 13 ·
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13

Graduate Electric charge, creating plasma and keeping it apart

  • Felix83
  • · Replies 2 ·
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2

High School Electromagnetic Waves: What & Why

  • electromagnet
  • · Replies 2 ·
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2

Graduate Electromagnetic Field: Electric & Magnetic Forces, Wavelength & Frequency

  • DB
  • · Replies 27 ·
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27

Undergrad Dielectric constant and index of refraction

  • StatusX
  • · Replies 3 ·
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3

Graduate Electric Potential: Solving for Distance d from Origin

  • funkwort
  • · Replies 2 ·
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2

Undergrad How Does Lenz's Law Cause an Aluminum Ring to Levitate?

  • vengefuldeath87
  • · Replies 1 ·
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1

High School Does air resistance affect projectile motion?

  • Physicist
  • · Replies 2 ·
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2

Undergrad Electro question: Drop Voltage with 1 ohm resistors

  • atrain77a
  • · Replies 2 ·
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2

Graduate Help with Delta Function & Spherical Electrostatic Potential

  • upsidedown314
  • · Replies 4 ·
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4

Graduate Model Electron Trapped in Magnetic Mirror - Ideas?

  • mcciysm3
  • · Replies 2 ·
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2

Undergrad Superposition principle to find the force due to a system of charges

  • siddharth
  • · Replies 13 ·
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13

High School Why Am I Experiencing Shocks in My Lab Near the Computer Screen?

  • karthik3k
  • · Replies 8 ·
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8

Charges for Styrofoam and Aluminum - Get Answers Here

  • the4thcafeavenue
  • · Replies 3 ·
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3

Graduate In an electrodynamic system, does the entropy of the field increase?

  • Crosson
  • · Replies 11 ·
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11

High School Measuring Current with Multimeter, Power Supply & Resistors

  • Haftred
  • · Replies 3 ·
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3

High School Voltage, Current & Amps: Explained

  • GumzyG
  • · Replies 5 ·
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5

High School Good books on electricity/magnetism?

  • relativelyslow
  • · Replies 15 ·
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15

Graduate How Does Charge Imbalance in a Conducting Rod Affect Electric Field Direction?

  • Soaring Crane
  • · Replies 4 ·
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4

Undergrad CRT Accelerating & Deflecting Voltages

  • Coldie
  • · Replies 14 ·
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14

High School Including air resistance in the calculation of falling objects

  • Jdo300
  • · Replies 13 ·
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13

Undergrad Capacitance of parrallel plates decrease

  • Alkatran
  • · Replies 3 ·
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3

Undergrad What Happens to the Charge on a Grounded Sphere Near a Charged Rod?

  • Coldie
  • · Replies 2 ·
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2

High School How Do Capacitors and Inductors Store Electric and Magnetic Energy?

  • juhi
  • · Replies 4 ·
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4

Undergrad Why is there a limit to producing high magnetic fields?

  • heman
  • · Replies 3 ·
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3

High School Positively charged rod to an uncharged electroscope

  • PhysKid24
  • · Replies 1 ·
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1

Undergrad Xtracting energy out of a magnet

  • Peterdevis
  • · Replies 5 ·
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5

Undergrad What is the highest voltage achievable on Earth and what limits its production?

  • sid_galt
  • · Replies 1 ·
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1

High School Why does increasing voltage result in a lower current?

  • Mark04
  • · Replies 21 ·
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21

Graduate Optically active materials + Faraday Rotation

  • freemind
  • · Replies 3 ·
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3

Graduate What is the self energy of electrons and how can it be calculated accurately?

  • microtopian
  • · Replies 3 ·
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3

Undergrad Permeability and Permittivity of Free space

  • metrictensor
  • · Replies 2 ·
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2

Undergrad General idea of what Maxwell did with electromagnitism

  • TheShapeOfTime
  • · Replies 2 ·
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2

Undergrad Resonance frequency of an object

  • Superman2
  • · Replies 4 ·
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4

High School Understanding Resistance and Temperature Effects in Metal Wires

  • GumzyG
  • · Replies 2 ·
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2

Undergrad Formula for magnetic field of solenoid

  • Gosuto Inu
  • · Replies 2 ·
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2

Graduate Unanswered Query: Is E(r) Undefined at r=R?

  • quasar987
  • · Replies 9 ·
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9

Graduate Questions about Maxwell's equations/radiation

  • anonymous299792458
  • · Replies 7 ·
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7

Undergrad Pyroelectricity=Peltier-Seebeck effect?

  • Mk
  • · Replies 2 ·
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2

Undergrad Need Help On Electrical Potential Energy

  • bongopukerat
  • · Replies 1 ·
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1

Graduate Proof of Gauss's Law: Connecting Flux and Closed Surfaces

  • quasar987
  • · Replies 54 ·
2
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54

Undergrad Current to heat relation for a wire

  • danesh
  • · Replies 2 ·
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2

Graduate Need help with EM/Jackson problem

  • pmb_phy
  • · Replies 2 ·
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2

Undergrad Threshold Frequency: Equation & Electron Release

  • Gogsey
  • · Replies 4 ·
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4

Undergrad Build a Maglev= (Magnetic levitation) train for a science project

  • Lisa...
  • · Replies 9 ·
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9

Graduate A question of charged spheres and voltages

  • Manchot
  • · Replies 4 ·
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4

Undergrad Increase Voltage without Increasing Wattage?

  • DB
  • · Replies 6 ·
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6

Graduate Another proof in electrostatics

  • quasar987
  • · Replies 11 ·
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11

Graduate How can I calculate the deflection of an electron in a cathode ray tube?

  • pmb_phy
  • · Replies 9 ·
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9

High School DIY Variable Capacitor for Homemade AM Radio Receiver

  • DawsonH
  • · Replies 4 ·
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4

Graduate What factors affect the temperature dependence of electrical conductivity?

  • JohanL
  • · Replies 3 ·
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3

Undergrad What Experiments Can We Do with Complex Numbers and AC Power?

  • britneyfan
  • · Replies 6 ·
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6

Graduate Griffith's EM third ed. pp.68 equ 2.12

  • quasar987
  • · Replies 7 ·
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7

Undergrad Traditional solenoids of C type

  • stunner5000pt
  • · Replies 1 ·
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1

Graduate Can Electromagnetic Radiation Help Define Absolute Rest in the Universe?

  • beckett
  • · Replies 3 ·
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3

Graduate Can voltage cause molecules to move and is it related to 'burn-in'?

  • KingNothing
  • · Replies 3 ·
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3

High School Understanding the Left-Hand Rule in Electrodynamics

  • Reshma
  • · Replies 4 ·
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4

Graduate Self Energy and Interaction Energy

  • maverick280857
  • · Replies 9 ·
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9

Undergrad Factors that govern the diffraction of electromagnetic waves

  • sid_galt
  • · Replies 4 ·
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4

Graduate Charge distributions & delta functions

  • homology
  • · Replies 2 ·
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2

Undergrad Proton electricity Possibly alternative power source?

  • derekmohammed
  • · Replies 7 ·
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7

Undergrad Does Flux equal charge enclosed in the electrostatic case in one dimension?

  • brendan_foo
  • · Replies 11 ·
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11

High School What's the Difference Between Voltage and Electrical Potential Energy?

  • 7bear
  • · Replies 2 ·
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2

High School Beat Frequency: How Does it Change With Pure Tone Increase?

  • T@P
  • · Replies 3 ·
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3

High School Sky divers air resistance balances with their weight

  • Gughanath
  • · Replies 7 ·
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7

Undergrad Electromagnetism in my physics class

  • sp00ky
  • · Replies 6 ·
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6