Electromagnetism Forum

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High School Make a motor with: AA battery, copper wire, magnet

  • Chaos' lil bro Order
  • · Replies 1 ·
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1

Undergrad Relative permittivity/Permeability

  • twinsen
  • · Replies 13 ·
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13

Graduate Maxwell's equations & Conductors

  • Swapnil
  • · Replies 12 ·
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12

Graduate How Does the Method of Images Solve Poisson's Equation in All of Space?

  • vjraghavan
  • · Replies 3 ·
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3

High School Electricity in Space: Can It Work?

  • Twiz
  • · Replies 3 ·
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3

High School Converting mechanical to electrical energy

  • MrLobster
  • · Replies 2 ·
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2

High School Build Electrodynamic Trap:Camera,Voltage,Distance

  • a789irfan
  • · Replies 1 ·
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1

Undergrad Moving charges and magnetic fields

  • Jdo300
  • · Replies 3 ·
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3

Undergrad Why is there a negative sign in the formula for inductive voltage?

  • arcnets2
  • · Replies 8 ·
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8

Undergrad Electric charges moving and magnetic field

  • haiha
  • · Replies 6 ·
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6

High School Creating a Solenoid Gun: Overcoming Midway Stoppage

  • majestic
  • · Replies 2 ·
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2

High School Electricity Speed: Light Switch to Bulb

  • nolanp2
  • · Replies 22 ·
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22

Graduate Particle in constant electic and magnetic field

  • Decan
  • · Replies 8 ·
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8

Graduate Resonant frequency of millimetric objects

  • rob malkin
  • · Replies 16 ·
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16

Graduate Are E and B Fields Only Significant When Measuring Light's Intensity?

  • pivoxa15
  • · Replies 11 ·
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11

Graduate Gauss's Law Problem: General than Coulomb's Law?

  • Kolahal Bhattacharya
  • · Replies 3 ·
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3

Graduate Lagrangian density of the EM field

  • Ahmes
  • · Replies 16 ·
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16

High School Is it posibble to transfer electricity wireless ?

  • ngkamsengpeter
  • · Replies 6 ·
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6

High School Magnets and electromagnet power?

  • Jacquesl
  • · Replies 3 ·
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3

Graduate Metal Charge Transfer: Why Thin Sheets Form

  • jinyong
  • · Replies 3 ·
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3

Graduate Optical Physics and Quantum Electronics

  • Astronuc
  • · Replies 1 ·
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1

Undergrad How Is Work Calculated for Permanent Magnets on Iron Plates?

  • korneld
  • · Replies 7 ·
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7

High School Magnetism: 12.5 kiloGauss = lbs pull

  • vmars
  • · Replies 2 ·
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2

Graduate Is the center of a charged spherical shell a point of neutral equilibrium?

  • Kolahal Bhattacharya
  • · Replies 8 ·
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8

Undergrad The Physics of Electric Flux Density Vector (D)

  • Swapnil
  • · Replies 18 ·
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18

Undergrad Can Metals Ever Have an Electric Field Inside?

  • cristian1500
  • · Replies 2 ·
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2

Undergrad How Do Eddy Currents Form in Transformers?

  • japam
  • · Replies 1 ·
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1

Undergrad Shouldn't the electromagnetic fields in waves be 90 degrees out of phase?

  • pizzadude
  • · Replies 7 ·
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7

Undergrad Is a 1-2T electromagnet smaller than 2 cm by 1 cm possible?

  • Beer-monster
  • · Replies 3 ·
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3

Undergrad Fundamental problem in electrostatics

  • Kolahal Bhattacharya
  • · Replies 4 ·
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4

Graduate Maxwell-Boltzmann, Fermi-Dirac and Bose-Einstein.

  • Clau
  • · Replies 1 ·
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1

Undergrad Divergence- Useful Concept? Why?

  • Swapnil
  • · Replies 7 ·
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7

Undergrad Can an EMF Induce a Magnetic Field in a Moving Metal Rod?

  • lockerman2007
  • · Replies 4 ·
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4

Undergrad Calculate earths magnetic field?

  • delta_simon
  • · Replies 1 ·
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1

High School Software for constructing simple circuit diagrams

  • rich t
  • · Replies 6 ·
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6

Undergrad How Do You Calculate Hall Voltage Across a Ribbon?

  • aesopsowner
  • · Replies 1 ·
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1

High School Electric Physics: Electric Fields, Flux & Potentials

  • aquabum619
  • · Replies 2 ·
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2

Undergrad Why does my phone get a signal in a metal box?

  • H_man
  • · Replies 18 ·
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18

Graduate Increase in energy in an electric field

  • Mr.4
  • · Replies 9 ·
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9

High School X Watts to run = x Watts of heat?

  • TSN79
  • · Replies 27 ·
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27

High School What does resonance frequency mean?

  • Jacquesl
  • · Replies 13 ·
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13

Graduate Self interaction, conserving energy

  • jostpuur
  • · Replies 2 ·
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2

Undergrad Negative and Positive Charges: A Deeper Look

  • Swapnil
  • · Replies 7 ·
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7

Undergrad Electric field of a Styrofoam ball

  • jonno426
  • · Replies 2 ·
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2

Undergrad Charge Equality Between Different Size Pith Balls

  • slickvic
  • · Replies 3 ·
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3

Graduate A single moving charge constituite a current

  • Kolahal Bhattacharya
  • · Replies 3 ·
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3

Graduate Creating a Magnetic Bubble: Proving or Disproving

  • BUBBLE BOY
  • · Replies 3 ·
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3

Graduate Momentum Conservation for Two Moving Charges

  • daniel_i_l
  • · Replies 9 ·
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9

Undergrad Why is the electric field constant in a wire?

  • alephgb
  • · Replies 18 ·
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18

Undergrad What is the relationship between Doppler Effect and frequency?

  • studentmom
  • · Replies 3 ·
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3

High School Magnetic Fields: Moving Electrons

  • Unicyclist
  • · Replies 10 ·
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10

Graduate Can protons and neutrons be converted into electrons and vice versa?

  • ppyadof
  • · Replies 2 ·
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2

Undergrad Is My Equation for Modelling Air Resistance in a Computer Game Accurate?

  • Adder_Noir
  • · Replies 12 ·
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12

Undergrad Name Electromagnetic Technologies

  • MattsVai
  • · Replies 5 ·
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5

Undergrad Energy - Gravity, Electromagntic , from where ?

  • JPC
  • · Replies 4 ·
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4

Undergrad Permanent magnet B field equation

  • lincsimp
  • · Replies 6 ·
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6

Undergrad In a railgun the lorentz force causes an object to be propelled

  • Bugmenot
  • · Replies 6 ·
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6

Undergrad Electric Field and two parallel plate capacitors

  • chaoseverlasting
  • · Replies 6 ·
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6

Undergrad Questions about electromagnnetic wave: amplitude

  • moe darklight
  • · Replies 4 ·
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4

Graduate Electromagnetic force in electric motor

  • batsan
  • · Replies 7 ·
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7

Graduate Will a single electron in vacuum vibrate?

  • K.J.Healey
  • · Replies 11 ·
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11

High School Charge of a Capacitor - Explaining Electric Field Strength

  • crossfacer
  • · Replies 15 ·
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15

High School Magnetic Force: Can vs 2L Bottle

  • remosmile
  • · Replies 1 ·
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1

High School Magnetic domains what are they?

  • linux kid
  • · Replies 1 ·
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1

High School Magnetic Field: Find the Right Magnet for a Foot Away

  • linux kid
  • · Replies 7 ·
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7

Graduate Charged black hole in electromagnetic field

  • Ben Rudiak-Gould
  • · Replies 4 ·
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4

Graduate Invariant quantities in the EM field

  • Mentz114
  • · Replies 2 ·
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2

Undergrad Charge and Electric Field Intensity

  • Soaring Crane
  • · Replies 2 ·
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2

Graduate Mass,Spring, Damper vs Capacitor, Indcutor, Resistor vs ? analogy

  • MedievalMan
  • · Replies 4 ·
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4

Undergrad Exploring Thomson's Charge to Mass Ratio: Implications for Cathode Rays

  • linux kid
  • · Replies 2 ·
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2

High School Electric Charges: Opposite Attract, Same Repel

  • Soaring Crane
  • · Replies 7 ·
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7

High School Capacitor Q: Charging vs Discharging

  • smileandbehappy
  • · Replies 2 ·
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2

Undergrad Two ferromagnetic balls, rolling down a ruler

  • Saketh
  • · Replies 7 ·
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7

Undergrad Mumetal Permeability: Right or Wrong?

  • linux kid
  • · Replies 16 ·
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16

Undergrad What Causes Electrons to Jump into Holes?

  • Karthikeyan
  • · Replies 2 ·
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2

Undergrad Ways to generate clean electricity?

  • Jacquesl
  • · Replies 6 ·
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6

High School Understanding Magnetic Attraction: Non-Magnetic Metal and Poles Explained

  • linux kid
  • · Replies 3 ·
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3

Graduate Newbie question please about electrons and light

  • calamero
  • · Replies 2 ·
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2

High School Rotate Bar Magnet: Magnetic Field Effects

  • nuts2546
  • · Replies 1 ·
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1

Undergrad If water is exposed to high voltage, it will ionize.

  • sunchips
  • · Replies 9 ·
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9

Undergrad Harness AC Current for Breadboard w/ LabPro

  • impendingChaos
  • · Replies 5 ·
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5

Undergrad Blocking Magnetic Energy: Materials and Solutions

  • linux kid
  • · Replies 3 ·
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3

High School Capacitors and potential difference

  • Fletcher
  • · Replies 3 ·
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3

Undergrad Why the Earth is electro-neutral?

  • Quantum River
  • · Replies 2 ·
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2

High School Magnetic forces and many poles

  • mustafallica
  • · Replies 4 ·
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4

High School The Development of Coulomb's Law

  • BelaLuna
  • · Replies 4 ·
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4

Graduate Lagrangian density for the EM field in a dielectric medium

  • MadMax
  • · Replies 5 ·
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5

Graduate Soap bubble measures electric field

  • Loren Booda
  • · Replies 4 ·
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4

Undergrad Magnetic Monopoles: Moving Charges & Existence Theory

  • debayan
  • · Replies 1 ·
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1

Graduate Comparing Coumlomb's Force Law & QED for Electromagnetic Forces

  • Sheyr
  • · Replies 2 ·
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2

Graduate Maxwell's Eq in Complex Form: Why Is It Not Popular?

  • Swapnil
  • · Replies 15 ·
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15

Undergrad Tube Magnet's Magnetic Field: Effects and Questions

  • healey.cj
  • · Replies 3 ·
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3

Undergrad Watts - How Does Voltage Affect Batteries and Static Electricity?

  • Nuklear
  • · Replies 13 ·
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13

High School The Mystery of Magnetic Blocks - Operation & Use

  • paul11273
  • · Replies 9 ·
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9

High School How Does Friction Generate or Transfer Electrical Charge?

  • americanforest
  • · Replies 4 ·
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4

Undergrad How does an em wave propagate at the speed of light?

  • rakeshbs
  • · Replies 6 ·
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6

Undergrad Minimum Voltage and Current for Electric Arc at One Inch Distance

  • force
  • · Replies 1 ·
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1

High School Does a Refrigerator Magnet Lose Its Strength Over Time?

  • TSN79
  • · Replies 11 ·
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11

Undergrad Dumb question about electronic structure

  • chriswwt
  • · Replies 3 ·
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3

Undergrad What are the applications of Quadrupole Neodymium magnets?

  • boeland
  • · Replies 3 ·
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3