Electromagnetism Forum

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Undergrad Relationship between material resistance and temperature

  • rede96
  • · Replies 9 ·
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9

High School Power relation to lightbulb wattage

  • nmsurobert
  • · Replies 19 ·
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19

Undergrad Electric Potential vs Electric Potential Energy

  • Alex Hughes
  • · Replies 4 ·
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4

High School Can I covert magnetic energy to electrical energy?

  • Ferdous Hossain
  • · Replies 9 ·
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9

Graduate Two States of Polarization of EM Waves

  • inticore
  • · Replies 2 ·
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2

Undergrad Do electron absorb the entire photon energy?

  • Aliam1
  • · Replies 1 ·
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1

Graduate Can cogging in permanent magnet motors be utilized for rotational movement?

  • physea
  • · Replies 12 ·
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12

Undergrad Does the charge of a capacitor change during immersion?

  • halo168
  • · Replies 3 ·
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3

High School Whether the voltage is actually a magnetic force?

  • torxxx
  • · Replies 18 ·
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18

High School How exactly does the electric force act?

  • torxxx
  • · Replies 10 ·
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10

High School Magnetic field lines directed?

  • cn_2149
  • · Replies 4 ·
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4

Graduate Asymmetrically charged capacitor

  • slow
  • · Replies 18 ·
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18

Undergrad Is it possible to create a magnetic field which can be seen?

  • HastiM
  • · Replies 8 ·
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8

Graduate Can a radio frequency be lowered by a passive circuit?

  • timelessmidgen
  • · Replies 11 ·
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11

Graduate Difficulty with a Point Charge Particle in Electrodynamics

  • gpran
  • · Replies 7 ·
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7

Graduate Electrostatic Boundary Conditions

  • Hypercube
  • · Replies 7 ·
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7

Undergrad Uniform Electrical potential energy

  • ysmin55555
  • · Replies 4 ·
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4

Undergrad Can there be an electric field inside an insulator?

  • lawsonfurther
  • · Replies 4 ·
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4

Undergrad Capacitors & AC: Changing Phase Difference

  • Soumyajit Sarkar
  • · Replies 2 ·
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2

Graduate Can Plastic Exhibit Magnetism Under Certain Conditions?”

  • Andrew Blaine
  • · Replies 6 ·
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6

Undergrad Confusion regarding Electric Potential Energy and Work

  • Abu
  • · Replies 1 ·
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1

High School Direction of the force on a conductor in a solenoid

  • Richie Smash
  • · Replies 15 ·
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15

Undergrad How can each Coulomb of charge transfer energy

  • torxxx
  • · Replies 18 ·
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18

High School The Hunt for Red October's Catepillar

  • jedishrfu
  • · Replies 1 ·
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1

High School A Question about Charging by Conduction

  • Kaneki123
  • · Replies 2 ·
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2

Undergrad Why do charged capacitors prevent current flow?

  • ubergewehr273
  • · Replies 19 ·
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19

Graduate Non symmetric case of Ampere's law

  • ubergewehr273
  • · Replies 17 ·
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17

Graduate Generalized Ohm's Law: Current Density & Capacitance

  • mertcan
  • · Replies 1 ·
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1

Undergrad Ferrite Rod Antenna: Understanding How It Works

  • bocchesegiacomo
  • · Replies 20 ·
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20

Graduate Electromagnetics wireless transmission of Energy

  • bocchesegiacomo
  • · Replies 6 ·
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6

Undergrad Divergence of ##\frac {1} {r^2} \hat r##

  • ubergewehr273
  • · Replies 18 ·
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18

Undergrad Is Ampere's Law Affected by External Currents?

  • ubergewehr273
  • · Replies 13 ·
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13

Graduate Stray field and demagnetizing field

  • Sahar ali
  • · Replies 6 ·
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6

Graduate Is Mu-Metal the Solution for High Permeability Applications?

  • Hami Hashmi
  • · Replies 45 ·
2
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45

High School Electric field at the surface of a spherical shell?

  • rahaverhma
  • · Replies 7 ·
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7

Undergrad Calculating the resonant frequency of a gas cylinder

  • DIYNerd
  • · Replies 2 ·
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2

Undergrad Coulomb's law, electrostatics?

  • Jurtinus
  • · Replies 42 ·
2
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42

Undergrad Satellites and the Earth's Magnetic Field

  • AdenB14
  • · Replies 7 ·
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7

High School Which creates an electric field -- charge or a charged particle?

  • franjo
  • · Replies 4 ·
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4

Graduate Conservation of electrical energy on a conductor

  • G Cooke
  • · Replies 12 ·
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12

High School Electric Field Lines: Midpoint Between 2 Charges

  • lawsonfurther
  • · Replies 23 ·
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23

High School The difference between electric field and electrical charge

  • franjo
  • · Replies 5 ·
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5

Graduate Does the superposition of electric fields not hold for moving charges?

  • Hiero
  • · Replies 7 ·
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7

High School What type of energy does electrical current have?

  • franjo
  • · Replies 26 ·
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26

Graduate Is a Universe with Just One Point Charge Physically Meaningful?

  • Altair Tans
  • · Replies 10 ·
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10

High School How does electrical current have energy?

  • franjo
  • · Replies 1 ·
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1

Graduate Attempt to find the magnetic field of a moving charge

  • Hiero
  • · Replies 7 ·
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7

Graduate Magnetic field of a moving charge and coulombs force

  • Hiero
  • · Replies 8 ·
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8

Undergrad What happens to the energy in an inductor or capacitor when opened?

  • RohanKulkarni
  • · Replies 4 ·
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4

Graduate Why center of mass? Why not center of charge?

  • Isaac0427
  • · Replies 22 ·
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22

Graduate Electric field in a capacitor with multiple dielectrics

  • Bhope69199
  • · Replies 2 ·
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2

Undergrad Holding down steel plate w/ multiple magnets: Does orientati

  • Wookbert
  • · Replies 2 ·
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2

Graduate Macroscopic Maxwell's equations and speed of light in media

  • Reignbeaux
  • · Replies 6 ·
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6

Graduate Direction of reflected E field on a dielectric surface?

  • DoobleD
  • · Replies 2 ·
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2

Undergrad Inertial Current: Electron Movement & Current Generation

  • Altair Tans
  • · Replies 1 ·
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1

Graduate Can an axisymmetric electric field be created without charges?

  • Christofer Br
  • · Replies 6 ·
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6

High School Is There an Echo of Electromagnetic Wavelengths in Sci-Fi?

  • Simon Peach
  • · Replies 14 ·
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14

High School A Question about Energy conversion....

  • Kaneki123
  • · Replies 3 ·
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3

Undergrad Question on classical electron radius

  • Jianphys17
  • · Replies 3 ·
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3

High School What is light exactly? Electromagnetic wave or photons?

  • tor1990
  • · Replies 25 ·
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25

Graduate Thermal Resistance to Centerline

  • terryphi
  • · Replies 2 ·
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2

Graduate Electromagnet and a current carrying wire

  • Hami Hashmi
  • · Replies 4 ·
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4

Undergrad What would cause a magnetic field in this case?

  • Hami Hashmi
  • · Replies 3 ·
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3

Undergrad How Can Static Electricity Be Controlled in Textile Spinning Machines?

  • Manikandan
  • · Replies 8 ·
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8

Undergrad Why we say that electrical energy is power over time p x t

  • tor1990
  • · Replies 8 ·
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8

Graduate If r=0 then will the electric charge of two points=infinity?

  • Hami Hashmi
  • · Replies 4 ·
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4

Undergrad Can We Create an Electric Field Blocking Material Like Mu-Metal?

  • Hami Hashmi
  • · Replies 3 ·
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3

Undergrad How charges can flow in circuit wires at the same potential

  • themagiciant95
  • · Replies 27 ·
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27

Graduate Does electron gas in metals experience viscosity?

  • Christofer Br
  • · Replies 1 ·
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1

Undergrad Does a rotating conductor generate a voltage change

  • Alfalfa206
  • · Replies 1 ·
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1

Graduate How to predict the movement of a magnet in a magnetic field?

  • Cathr
  • · Replies 3 ·
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3

Graduate Can the Lorentz Force be understood non-relativistically?

  • RiemannLebesgueLemma
  • · Replies 2 ·
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2

Graduate Can charged baryons flow induce magnetic field?

  • cairoliu
  • · Replies 5 ·
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5

Graduate Susceptibility of Ferromagnetic materials

  • Charles Link
  • · Replies 9 ·
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9

Undergrad The circuit of the induction coil

  • Aya Elsayed
  • · Replies 5 ·
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5

Graduate Non linear field of a long bar magnet

  • shustrng
  • · Replies 2 ·
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2

High School Magnetic Levitation for Fragrance Dispenser | Product Design

  • KC Kian Chong
  • · Replies 9 ·
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9

Undergrad Why doesn't a magnetically levitating conductor oscillate?

  • chandrahas
  • · Replies 17 ·
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17

Undergrad Confusion about the electric potential

  • Mr Genius
  • · Replies 2 ·
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2

Undergrad How to test toroidal permanent magnet with inside field

  • cairoliu
  • · Replies 14 ·
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14

Undergrad Eye's response to electromagnetic (light) waves?

  • Hank Kolesnik
  • · Replies 3 ·
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3

Undergrad Voltage Equality: How to Determine Between Two Points with Resistances Given

  • Aya Elsayed
  • · Replies 6 ·
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6

Graduate Maxwell’s Equations Wave Solutions

  • Isaac0427
  • · Replies 28 ·
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28

Undergrad Electric field lines of a sphere in a uniform electric field

  • sergiokapone
  • · Replies 10 ·
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10

Undergrad Calculating how to make a homemade capacitor

  • reese houseknecht
  • · Replies 12 ·
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12

Graduate Need help with a thought experiment about a Faraday generator

  • girts
  • · Replies 1 ·
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1

Undergrad Natural Frequency of a Foam Block?

  • Invertalon
  • · Replies 5 ·
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5

High School Why Does Wire Orientation Affect the Motor Effect in Electromagnets?

  • Josielle Abdilla
  • · Replies 5 ·
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5

Undergrad Copper Magnetism: Interaction & Strength Requirements

  • Lugonja
  • · Replies 18 ·
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18

High School Magnetic Levitation (electromagnets?) for an 11th grader

  • Joe ONeil
  • · Replies 3 ·
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3

Graduate Magnetic field and Poynting Flux in an Inductor

  • Rafimah
  • · Replies 6 ·
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6

Undergrad About acoustics physics -- The Wave Equation and diminishing sound intensity

  • Nunzio Luigi
  • · Replies 1 ·
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1

Undergrad Does a Wire in an AC Circuit Have a Surface Charge Distribution?

  • themagiciant95
  • · Replies 4 ·
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4

Graduate Why is it obvious that this Lagrangian is Lorentz invariant?

  • Kara386
  • · Replies 1 ·
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1

Graduate Current Density between two infinite plates

  • themagiciant95
  • · Replies 7 ·
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7

Graduate Thermal radiation and charged particle acceleration

  • Getterdog
  • · Replies 3 ·
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3

Graduate Gauss' Law for electromagnetic radiation?

  • Elmer Correa
  • · Replies 7 ·
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7

Graduate Stray/Parasitic Capacitance - Impacts phase velocity?

  • Strides
  • · Replies 10 ·
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10

Undergrad Magnetic Lines of Dipole and Circular Current wire

  • Vivek098
  • · Replies 1 ·
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1

Undergrad Need references for magnetic force vs distance/angle topic

  • Marc Samarra
  • · Replies 2 ·
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2