Electromagnetism Forum

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Undergrad Why does an element in a circuit cause a "voltage drop"

  • Mr Davis 97
  • · Replies 3 ·
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3

Graduate Breakdown of Air due to RF fields

  • James50
  • · Replies 5 ·
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5

Undergrad Are field lines from a magnetic dipole equal in magnitude?

  • Luke Cohen
  • · Replies 4 ·
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4

High School Minimum Force of Attraction Between Magnets for Humans

  • prse243
  • · Replies 4 ·
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4

Graduate How would *You* detect magnetic monopoles?

  • VforVendetta
  • · Replies 7 ·
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7

High School Is air resistance dependent on mass?

  • quietrain
  • · Replies 7 ·
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7

High School Can a smaller magnet still repel with the same force as a larger magnet?

  • Stoney
  • · Replies 1 ·
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1

Graduate Proof of Gauss' Law for Electrodynamics?

  • Michael.7
  • · Replies 9 ·
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9

High School Why Do Flames Contain Electrons and Ions?

  • steve oliver
  • · Replies 3 ·
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3

Undergrad Electric Potential Energy & Electric Potential

  • student07
  • · Replies 7 ·
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7

Graduate Shielding magnetism with superconductors

  • Danyon
  • · Replies 9 ·
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9

Undergrad Current in ideal wires -- circuits

  • Climber
  • · Replies 24 ·
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24

Undergrad How Do You Calculate the Resistance of a Rectifier When Sending AC Through It?

  • radaballer
  • · Replies 3 ·
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3

Graduate Understanding Curl in 2D/3D Space

  • Harry Mason
  • · Replies 1 ·
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1

Undergrad Induced Emf due to changing magnetic flux

  • Cookiey
  • · Replies 4 ·
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4

High School Electricity current and circuit questions

  • Lim Y K
  • · Replies 17 ·
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17

High School Electricity Basics: Voltage 220V & Potential Difference

  • Physics Newbie
  • · Replies 3 ·
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3

Undergrad Charged capacitor discharges to neutral cap energy losses?

  • radaballer
  • · Replies 16 ·
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16

Undergrad How to find the magnetic flux of this magnet?

  • radaballer
  • · Replies 3 ·
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3

Graduate Uniqueness of magnetic vector potential

  • fricke
  • · Replies 4 ·
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4

Undergrad Help finding the derivative for Faraday's equation?

  • radaballer
  • · Replies 1 ·
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1

Undergrad Magnetic field around a wire near ferrous materials

  • EddieP
  • · Replies 2 ·
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2

Graduate Why Does Negative Resistance Indicate Ballistic Transport?

  • Benevito
  • · Replies 1 ·
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1

Graduate Function multiplied by its complex conjugate

  • Steve Drake
  • · Replies 4 ·
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4

Undergrad Magnetic field to increase concentration

  • fysik
  • · Replies 12 ·
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12

High School I saw something unexplainable while soldering

  • Jarfi
  • · Replies 1 ·
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1

High School Can you charge a battery with another battery?

  • radaballer
  • · Replies 15 ·
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15

Undergrad Increasing the magnetic field around a wire

  • EddieP
  • · Replies 1 ·
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1

Undergrad Magnetic force between two wires

  • Danyon
  • · Replies 3 ·
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3

High School Review Geocentric model currently used

  • Jose Leal
  • · Replies 6 ·
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6

Graduate Does a Magnetic Field Emerge from a Moving Charge with Constant Angular Speed?

  • Timothy S
  • · Replies 6 ·
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6

Undergrad Energy lost due to resistance?

  • radaballer
  • · Replies 2 ·
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2

Undergrad Calculating field strength mV/m at distance d - check me

  • Fran3
  • · Replies 9 ·
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9

Undergrad Why Does a Pith Ball Get Charged by a Plastic Rod but Not by an Electrophorus?

  • localrob
  • · Replies 7 ·
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7

High School A question on Electromotive Force

  • Lim Y K
  • · Replies 4 ·
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4

Graduate Phase shift in frequency domain

  • Eng_Pat
  • · Replies 3 ·
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3

Graduate Sign of Maxwell's stress tensor

  • sweet springs
  • · Replies 5 ·
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5

Undergrad Induction - in two parallel wires - affecting voltage?

  • Hyo X
  • · Replies 2 ·
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2

Undergrad Does V or I remain constant in a discharging battery?

  • radaballer
  • · Replies 5 ·
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5

High School How can i calculate the resistance of this electromagnet?

  • radaballer
  • · Replies 4 ·
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4

Undergrad Can I remove rust by applying current?

  • fysik
  • · Replies 2 ·
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2

Undergrad Magnetic Fields & Loops of Current: Explained

  • fricke
  • · Replies 2 ·
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2

Graduate What exactly is a complex acoustic pressure?

  • IrfRaz
  • · Replies 1 ·
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1

Graduate Lorentz force in different frames of reference

  • Aman Chauhan
  • · Replies 12 ·
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12

Graduate Electromagnetic tensor and energy

  • itssilva
  • · Replies 10 ·
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10

Undergrad Electric Potential Energy Concept

  • r0306
  • · Replies 4 ·
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4

Graduate Dot product vs trigonometry in Gauss' law

  • Korosenai
  • · Replies 6 ·
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6

Undergrad What happens on external surface of the Faraday cage?

  • goodphy
  • · Replies 14 ·
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14

High School Why flow of electrons through a conductor produce magnetic field

  • akashpandey
  • · Replies 7 ·
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7

Undergrad Why is the basic charge not equal to the reciprocal of a Coulomb?

  • snowjoe
  • · Replies 16 ·
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16

Undergrad Design 1.5 A Solenoid & Charge 1.5 V Battery

  • p0uya
  • · Replies 6 ·
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6

Graduate When r=0 in Coulomb's law; electron self-repulsion

  • nomadreid
  • · Replies 4 ·
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4

Undergrad Are Electron Orbitals Static or Dynamic?

  • Ryan Reed
  • · Replies 1 ·
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1

Undergrad Magnetic Rotation: Will South Pole Move to North?

  • pbhuter
  • · Replies 7 ·
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7

Graduate Understanding EM Wave Transfer when Person Touches Amplifier Input

  • derek10
  • · Replies 2 ·
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2

Undergrad Does a solenoid wrapped around a magnet meet resistance?

  • radaballer
  • · Replies 7 ·
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7

High School Why Don’t Electrons Stick to Protons Despite Their Opposite Charges?

  • JML
  • · Replies 2 ·
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2

Graduate Can local voltage drop be developed over ground plane?

  • goodphy
  • · Replies 10 ·
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10

High School Specs for a magnet to trigger a magnetic reed switch?

  • Yooniv
  • · Replies 4 ·
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4

Undergrad Work function in photoelectric effect

  • gracy
  • · Replies 2 ·
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2

Graduate Feynman lectures electric dipole question

  • axmls
  • · Replies 2 ·
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2

Undergrad Deriving the equation for capacitor discharge

  • Sturk200
  • · Replies 19 ·
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19

Graduate What is the resonance frequency for oscillating electrons in a metallic net?

  • fysik
  • · Replies 26 ·
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26

Undergrad Atomic electromagnetic simulator

  • fysik
  • · Replies 5 ·
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5

Undergrad Electron beam hitting a metal plate

  • abdo799
  • · Replies 8 ·
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8

High School Wire supplying current to a filament lamp doesnt get hot?

  • Dixanadu
  • · Replies 3 ·
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3

Graduate Question about decoding information in electromagetic wave

  • Jackson Lee
  • · Replies 7 ·
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7

Undergrad Which is the air resistance formula?

  • Joroba3
  • · Replies 1 ·
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1

Graduate Biot-Savart law and Ampere's law

  • Nathanael
  • · Replies 3 ·
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3

High School Looking For Books Hardware, Computers, ElectronIcs -- Beginner

  • Bok$
  • · Replies 5 ·
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5

Graduate Induced EMF due to changing current in straight wire

  • TheJfactors
  • · Replies 21 ·
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21

Undergrad Gauss' Law -- How did he come up with it?

  • amjad-sh
  • · Replies 4 ·
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4

Undergrad Relationship between static electric field and electromagnet

  • Jackson Lee
  • · Replies 3 ·
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3

Undergrad What's the point of a voltmeter having a high internal resistance?

  • needingtoknow
  • · Replies 14 ·
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14

Undergrad Why are high frequencies bands chosen in satellite communication?

  • curiousman
  • · Replies 7 ·
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7

Undergrad Electron Refraction: Low Energy/Small Wavelength

  • Karim Habashy
  • · Replies 3 ·
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3

Graduate Why does an electron not fall into the nucleus?

  • avito009
  • · Replies 9 ·
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9

Undergrad How Does Grounding Affect Charge Distribution on a Conductor?

  • zippeh
  • · Replies 5 ·
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5

Undergrad Link between Green Glow and Electron

  • harman90
  • · Replies 3 ·
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3

High School Piezo crystals and current generation

  • ryanuser
  • · Replies 1 ·
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1

Undergrad How do you calculate magnetic flux for maxwells equation?

  • radaballer
  • · Replies 3 ·
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3

Graduate Electrons at rest have magnetic fields

  • TruBlu4AU
  • · Replies 13 ·
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13

High School Same distance of electrons from the nucleus for same element

  • avito009
  • · Replies 1 ·
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1

High School Will a 9V electromagnet work with a battery of a lesser voltage

  • radaballer
  • · Replies 3 ·
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3

Graduate Could a cavity magnetron be used for infrared instead

  • lufc888
  • · Replies 1 ·
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1

Undergrad How do I calculate the repelling Force of an Electromagnet?

  • jason Kenedy
  • · Replies 3 ·
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3

Undergrad How to calculate attractive force between mag & electromag?

  • radaballer
  • · Replies 1 ·
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1

High School Can I make an electromagnet attract to either pole of a mag?

  • radaballer
  • · Replies 3 ·
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3

Undergrad Photon Displacement in EM Waves (Amplitude)

  • Steve13579
  • · Replies 8 ·
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8

Undergrad Compression on Piezoelectric crstals

  • SmritiB
  • · Replies 7 ·
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7

Graduate What does it mean for a charge to be uniformly distributed on a spherical shell?

  • izzmach
  • · Replies 1 ·
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1

Where to Purchase PVDF Piezoelectric Sheets?

  • ryanuser
  • · Replies 7 ·
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7

Undergrad What Is the Difference Between Semi-Infinite and Infinite Wires?

  • izzmach
  • · Replies 2 ·
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2

Undergrad Can Kirchoff's Laws Be Applied to Solve Hexagonal Grid Resistance?

  • Sanchayan
  • · Replies 16 ·
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16

High School What is the maximum height a magnet can hover in a magnetic levitating globe?

  • magiktcup
  • · Replies 11 ·
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11

Undergrad Impact of air resistance at varying angles

  • eddywalrus
  • · Replies 16 ·
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16

High School How can I get base current in this simple transistor switch?

  • goodphy
  • · Replies 8 ·
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8

Graduate Electric field and potential on a singular spin helix

  • Char-L
  • · Replies 2 ·
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2

Graduate What is the Tesla of a magnetar?

  • Alex299792458
  • · Replies 3 ·
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3

High School What factors influence voltage

  • Arcthor
  • · Replies 7 ·
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7