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Undergrad Why do the plates attract in Rene's experiment?

  • TK Wilson
  • · Replies 2 ·
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2

Undergrad F=qvB: Questions about Charge & Velocity

  • kelvin490
  • · Replies 5 ·
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5

Undergrad Problem about electric resistance

  • kelvin490
  • · Replies 2 ·
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2

Undergrad Mutual Inductance and Transformer Question

  • simpleton
  • · Replies 11 ·
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11

High School Which sphere will be heavier: one with a charge of 0.0000001C or one with 100C?

  • astro2cosmos
  • · Replies 7 ·
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7

Graduate Electromagnetic Black hole phenomena

  • bassplayer142
  • · Replies 3 ·
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3

Undergrad Does an Electric Field Outside of a Wire Supply Energy to a Resistor?

  • GrizzlyBat
  • · Replies 1 ·
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1

High School Are magnetic fields conservative field?

  • fluidistic
  • · Replies 2 ·
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2

Graduate What is the Divergence of a Point Charge in Cartesian Coordinates?

  • hbweb500
  • · Replies 2 ·
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2

High School Uses of an Isolation Transformer

  • wavingerwin
  • · Replies 3 ·
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3

High School Solving LED Power Supply Issues: Tips from John

  • John Readman
  • · Replies 5 ·
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5

Graduate Electromagnetic Radiation from a Rotating Magnet

  • acimarol
  • · Replies 2 ·
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2

Graduate Producing High Frequency Waves in Labs - YoctoHertz Limitations

  • trini
  • · Replies 4 ·
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4

High School Assistance Needed For Rearranging Equations

  • asad1
  • · Replies 1 ·
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1

Graduate What Determines Q(free) in Dielectrics?

  • coochnpoon
  • · Replies 1 ·
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1

Undergrad Electromagnetic wave attenuation

  • petermer
  • · Replies 17 ·
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17

Undergrad Felt like I understood circuits until

  • Newtime
  • · Replies 2 ·
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2

Undergrad Electromagnetic induction; bike dynamo

  • Xalt
  • · Replies 6 ·
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6

Graduate Physics Puzzle: Magnetic Field Generated by Approximation of a Flower

  • cpcolts
  • · Replies 4 ·
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4

Graduate Gaussian Units: Electric Field

  • soupdejour
  • · Replies 1 ·
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1

Graduate Send Signals from a Distance: EM Radiation or Gravity?

  • adamwho
  • · Replies 8 ·
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8

Graduate Magnetic acceleration of a ship in space (hyper-particle-acceleration?)

  • Fedko
  • · Replies 8 ·
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8

Undergrad Question about charge by induction

  • stingray191
  • · Replies 2 ·
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2

Graduate Electron Collision: Proton & Electron Interaction

  • xMonty
  • · Replies 2 ·
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2

Graduate Using e=mc^2 to calculate electrical properties

  • gillies
  • · Replies 10 ·
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10

Graduate What is the current best estimate for LHC online

  • ensabah6
  • · Replies 1 ·
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1

High School What is the difference between voltage drop and wattage?

  • user111_23
  • · Replies 3 ·
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3

Undergrad Does the electric field change due to rotation

  • dragonlorder
  • · Replies 2 ·
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2

Graduate Uses of very large magnetic fields

  • trini
  • · Replies 5 ·
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5

Graduate Light from non accelerating charge?

  • gonchenshi
  • · Replies 7 ·
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7

Graduate Confusion with nature of induced electric field.

  • siddharth5129
  • · Replies 4 ·
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4

Direction of Motion of Electrons

  • epilot
  • · Replies 5 ·
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5

Graduate Proving Gauss's Law with Coulomb's Law: Challenges and Solutions

  • sadraj
  • · Replies 2 ·
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2

High School What is the Difference Between Magnetic and Electric Flux?

  • epilot
  • · Replies 4 ·
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4

Undergrad Electric field of a current loop

  • mathperson
  • · Replies 27 ·
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27

Undergrad Solving Solenoid Field Problem: B=urNI & Force on Iron

  • I_am_learning
  • · Replies 4 ·
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4

Undergrad Confusion about the nature of magnetic forces.

  • siddharth5129
  • · Replies 4 ·
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4

High School How to Find the Phase Difference in Degrees

  • etotheo
  • · Replies 3 ·
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3

Undergrad Energy Absorption: How Atoms Interact with Waves

  • Simon76
  • · Replies 4 ·
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4

Graduate Lorentz force -> Current in a gradient field

  • Pogo
  • · Replies 1 ·
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1

Graduate Accelerating Charges: Classical Theory and Light Radiation

  • Cheman
  • · Replies 38 ·
2
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38

Graduate Flux of magnetic moment into a coil

  • flying_fred
  • · Replies 1 ·
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1

Undergrad The distribution of charges in a conductor

  • micomaco86572
  • · Replies 3 ·
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3

Undergrad Damping , resonance and natural frequency?

  • Thevanquished
  • · Replies 6 ·
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6

Graduate Electron repulsion per unit volume

  • taylaron
  • · Replies 2 ·
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2

High School Contradiction on electric field ?

  • amrice
  • · Replies 2 ·
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2

Graduate How do two charged particles move in an electromagnetic field?

  • ConradDJ
  • · Replies 4 ·
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4

Undergrad Unanswered Question: Who Does Mechanical Work for Magnetism?

  • Frank66
  • · Replies 1 ·
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1

Undergrad Electrostatic repulsion formula for plates

  • joshste86
  • · Replies 1 ·
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1

High School Understanding Power and Energy Calculations for Electrical Output

  • dvn
  • · Replies 9 ·
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9

High School Electric Field Direction: How to Determine Left or Right Orientation

  • PetetheGreek
  • · Replies 4 ·
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4

High School How is voltage by itself important?

  • user111_23
  • · Replies 7 ·
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7

Graduate Can Known Electric and Magnetic Fields be Used to Derive Current Sources?

  • krindik
  • · Replies 3 ·
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3

Undergrad Effect of Resistance on Current

  • dschmidt12
  • · Replies 5 ·
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5

Undergrad Why do both Coulomb and Gravity follow 1/r^2 laws?

  • Djinn
  • · Replies 8 ·
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8

Graduate Diffusing an electron beam throughout a chamber

  • ScienceNerd36
  • · Replies 21 ·
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21

High School Is Pulsing Current the Same as Alternating Current?

  • Apteronotus
  • · Replies 7 ·
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7

Undergrad Energy of an uniformly charged bar of length L

  • DaTario
  • · Replies 6 ·
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6

Undergrad Speed of Electricity in Wiring - Why near light speed?

  • Buckeye
  • · Replies 38 ·
2
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38

Graduate Electronic theremal conductivity

  • pafcu
  • · Replies 2 ·
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2

Graduate Coulomb's Law at Very Short Distance Scales

  • Djinn
  • · Replies 3 ·
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3

Undergrad Capacitors in magnetic fields?

  • physguy09
  • · Replies 1 ·
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1

Graduate Why Do Two Methods Yield Different Results for Charging a Sphere?

  • p3rry
  • · Replies 6 ·
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6

Undergrad Stable Magnet Energy What's their source?

  • WaxyChicken
  • · Replies 2 ·
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2

Undergrad London Forces in a body that's conducting electricity

  • sermatt
  • · Replies 1 ·
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1

Graduate Two oppositely charged infinite conducting plates

  • AxiomOfChoice
  • · Replies 1 ·
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1

Undergrad Field lines of a ring of magnets?

  • dfinch
  • · Replies 1 ·
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1

Undergrad Capacitance of Right Angle plates

  • compton1
  • · Replies 4 ·
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4

Graduate Difference in potential induced by a magnetostatic field? O_o

  • Vectronix
  • · Replies 4 ·
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4

Graduate Question about current in an infinite circuit

  • fluidistic
  • · Replies 5 ·
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5

Undergrad Photoelectric Effect: Wavelengths & Metals

  • HMS-776
  • · Replies 6 ·
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6

Undergrad E-field & electric potential of a metal conductor

  • lifeiseasy
  • · Replies 8 ·
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8

Graduate Line of charge as a volume charge dist. (w/ Dirac delta fcn.)

  • AxiomOfChoice
  • · Replies 1 ·
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1

Undergrad Simple Voltage in Conducting Spherical Shell Question

  • Switch11b
  • · Replies 1 ·
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1

Graduate How to get zero electric field inside spherical shell without using Gauss law

  • chemfirus
  • · Replies 6 ·
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6

High School I'm confused about power and voltage.

  • user111_23
  • · Replies 3 ·
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3

Undergrad Understanding Electric Field Addition for Opposite Charges

  • keyfob
  • · Replies 5 ·
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5

Graduate About polarization and electric field

  • KFC
  • · Replies 3 ·
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3

Undergrad Regarding heat property of electromagnetic waves

  • srvs
  • · Replies 4 ·
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4

Undergrad Inductance in Kirchoff's voltage law

  • naftali
  • · Replies 8 ·
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8

Graduate How Does Shape Affect the Calculation of Induced Electric Fields?

  • arjunarul
  • · Replies 1 ·
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1

Undergrad How does an electric field create a magnetic field and relativity

  • sameeralord
  • · Replies 1 ·
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1

Graduate Visualizing EM Waves: 3D Model & Resonant Cavity Simulation in Java Applet

  • protonic_mass
  • · Replies 1 ·
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1

Graduate General relationship for direction of E field at any given point

  • Ravenatic20
  • · Replies 4 ·
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4

Undergrad Pumping electrons without magnetics?

  • Brock
  • · Replies 6 ·
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6

Graduate Q on Jackson. Lorentz force modification for radiation?

  • Peeter
  • · Replies 6 ·
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6

Undergrad Kirchhoff's Law and current Sources?

  • dphysics
  • · Replies 7 ·
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7

Undergrad Electric Potential energy for geometric objects

  • simpleton
  • · Replies 13 ·
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13

Undergrad Explaining Voltage/Current/Resistance to non-physicists

  • vortmax
  • · Replies 2 ·
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2

Undergrad Question about capacitors with dielectrics

  • anon6912
  • · Replies 3 ·
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3

Graduate Compute the volume charge density of a charged spherical conductor

  • Count Iblis
  • · Replies 17 ·
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17

Graduate Derivation of Lagrangian for Classical Electrodynamics

  • Born2bwire
  • · Replies 4 ·
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4

Graduate Electromagnetic force calculation

  • krindik
  • · Replies 3 ·
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3

Undergrad What's the physics behind this phenomena (sound / electromagnetics)

  • nietzsche
  • · Replies 1 ·
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1

High School Find Best Metal for DIY Capacitor Experiments

  • jalebi
  • · Replies 41 ·
2
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41

Undergrad How much energy can be generated from a 1000kg weight using a hydraulic system?

  • johnjz
  • · Replies 3 ·
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3

What Are the Best Ways to Store Energy from a Perpetual Magnetic Generator?

  • warlockthor
  • · Replies 6 ·
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6

Graduate Can magnetic flux be surpressed or added to?

  • mmalf_mi
  • · Replies 1 ·
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1

Undergrad Can You Generate Power from a Wrapped Power Cord and a Metal Hanger?

  • NotoriousNick
  • · Replies 6 ·
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6

Undergrad Safety of Touching Charged Sphere on Insulating Stool

  • yitriana
  • · Replies 1 ·
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1