Electromagnetism Forum

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High School What happens to the Low Pass Filter as frequency approaches 0 and infinity?

  • houlahound
  • · Replies 4 ·
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4

High School Will a Solenoid in a Metal Pipe Create Perpendicular Magnetic Fields?

  • Salvador
  • · Replies 2 ·
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2

Graduate Electromagnetic Waves: P1 & P2 Intensity, T2-T1/C Distance, & B Magnitude

  • kent davidge
  • · Replies 11 ·
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11

High School Does the length of a wire affect its resistance?

  • Zoey
  • · Replies 8 ·
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8

Graduate How Does a Charge Exert Force on Itself?

  • Avi Nandi
  • · Replies 2 ·
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2

Graduate Constant Charge/Current Densities with Accelerating Charges

  • particlezoo
  • · Replies 13 ·
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13

Graduate Confusion in Maxwell's derivation of Ampere's Force Law

  • faheemahmed6000
  • · Replies 5 ·
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5

Is Electron Spin always Well Balanced?

  • Zoey
  • · Replies 3 ·
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3

Undergrad Iron & Magnetic Fields: Permeability or Screening?

  • Dyon
  • · Replies 32 ·
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32

Undergrad Proving the Linearity of the Curl Operator in Electromagnetic Theory

  • Sheldon Cooper
  • · Replies 14 ·
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14

Graduate Magnetic field energy of electron

  • lirkepirk
  • · Replies 7 ·
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7

Graduate What is frequency from a photon's perspective?

  • nnerik
  • · Replies 24 ·
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24

Undergrad Magnetic field outside of a solenoid conceptual

  • Sho Kano
  • · Replies 3 ·
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3

Undergrad How Magnetic Flux Causes Load on Generators

  • Elmo Lopez
  • · Replies 5 ·
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5

Undergrad Questions about electric fields, voltage and electric energy

  • Scooby2016
  • · Replies 16 ·
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16

High School How many electrons on a Capacitor calculation

  • ENE
  • · Replies 13 ·
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13

Undergrad Rolling resistance relation with speed

  • DarkKRaziel
  • · Replies 8 ·
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8

High School Explaining Magnetic Force on Iron Without Moving Charge

  • Christopher R
  • · Replies 7 ·
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7

Undergrad Electric Field Proof: Can Point A Have a Higher Field Than Point B?

  • Biker
  • · Replies 8 ·
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8

Undergrad Why won't a magnet exert a force on a stationary charged particle

  • d4rr3n
  • · Replies 8 ·
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8

Undergrad Why Does a Negative Ion Move Towards the Anode in a Parallel Plate Capacitor?

  • Intle
  • · Replies 9 ·
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9

Undergrad Do # of magnets affect the time for a metal"s Curie point?

  • KShah423
  • · Replies 2 ·
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2

Graduate Can a demagnetized neodymium magnet be restored?

  • juyoung518
  • · Replies 3 ·
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3

Undergrad Magnetic fields in circular loop

  • Biker
  • · Replies 7 ·
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7

Graduate Charged particles through various B field shapes quesion

  • Salvador
  • · Replies 3 ·
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3

Undergrad Why does an electron shell further away from nucleus has higher energy?

  • Boomzxc
  • · Replies 13 ·
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13

High School How Can I Determine the Value of Charges in Coulomb's Law?

  • Josh225
  • · Replies 9 ·
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9

Graduate Why Does a Second Solenoid Feel a Strong Induction in Electromagnetic Induction?

  • Omega0
  • · Replies 1 ·
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1

Undergrad Step Up Transformer: Current AND Voltage Increased?

  • Scarlett Bones
  • · Replies 8 ·
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8

Undergrad Why Doesn't Current Flow Continuously When Magnetic Flux is Permanently Changed?

  • Karan Punjabi
  • · Replies 6 ·
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6

Undergrad The negative charge of the Earth

  • d4rr3n
  • · Replies 2 ·
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2

High School Struggling with Electric force.... The Superposition Principle

  • Amaliahch
  • · Replies 2 ·
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2

Undergrad How are Lenz's law and Faraday's law connected?

  • Astik
  • · Replies 2 ·
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2

High School Why does accelerating a loop through a constant magnetic field induce an EMF?

  • Sho Kano
  • · Replies 9 ·
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9

High School Discovering Earth's Direction with Magnetic Needle Compass

  • ENE
  • · Replies 6 ·
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6

Graduate Finding the Electric Field of a Hollow Cylindrical Conductor

  • tade
  • · Replies 2 ·
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2

Graduate Relation between torque and magnetic moment

  • Happiness
  • · Replies 1 ·
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1

Undergrad Resonant frequency in acoustics

  • SaulC
  • · Replies 4 ·
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4

Graduate The Conditions for Biot-Savart Law to Ampere's Law

  • tade
  • · Replies 4 ·
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4

Undergrad How does a magnetic field induce an electric current?

  • Biker
  • · Replies 1 ·
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1

Undergrad Can the temperature of an object be derived from the EM Wave

  • poot lovato
  • · Replies 4 ·
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4

Undergrad As the frequency increases so does the energy Em wave carry

  • Geek007
  • · Replies 2 ·
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2

Undergrad Estimating magnetic field based on pull force

  • EddieP
  • · Replies 1 ·
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1

Undergrad Confused about electrostatic voltage and DC voltage

  • electricnoob
  • · Replies 1 ·
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1

High School When a charged object is brought close to an uncharged one (attraction)

  • Aldnoahz
  • · Replies 4 ·
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4

Undergrad Kinetic Energy of two positive charges flying apart

  • UMath1
  • · Replies 3 ·
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3

Undergrad Why does current still flow with no voltage?

  • TiernanW
  • · Replies 10 ·
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10

Graduate Correcting Misconceptions about the Frequency of RF Pulses in MRI

  • BobP
  • · Replies 3 ·
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3

Graduate Zero-Divergence of Rate of Change of Magnetic Flux

  • tade
  • · Replies 6 ·
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6

Undergrad Magnetic field strength for circular loop

  • Sho Kano
  • · Replies 12 ·
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12

Graduate Ferromagnetism - thought problem

  • Onjii
  • · Replies 1 ·
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1

Undergrad How is Fleming's left hand rule applied in Hall effect

  • Shafia Zahin
  • · Replies 3 ·
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3

Undergrad Magnetic Flux in a Coaxial Cable

  • Drakkith
  • · Replies 1 ·
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1

Undergrad Electromagnetiic wave power transfer

  • Vanmathi Ravikumar
  • · Replies 22 ·
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22

High School USB power bank: How can both voltage and current be given

  • greypilgrim
  • · Replies 4 ·
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4

High School RLC Circuit Analysis: Phase Difference & Impedance Modulus

  • Titan97
  • · Replies 5 ·
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5

Graduate Magnetism, electricity, and photons

  • Alan Tomazin
  • · Replies 11 ·
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11

High School Voltage drop in an electric circuits

  • John Pang
  • · Replies 6 ·
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6

Graduate Transformer lamination thickness calculation

  • rfequip
  • · Replies 1 ·
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1

Graduate Would there exist capacitance if the speed of light....

  • Kohler1000
  • · Replies 1 ·
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1

Graduate "Biot-Savart equivalent" of Faraday's Law?

  • greswd
  • · Replies 7 ·
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7

Undergrad Solenoid Magnetic Field calculation

  • UMath1
  • · Replies 5 ·
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5

Graduate How can a point charge exert force on itself?

  • maline
  • · Replies 27 ·
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27

High School Current flow evenly in a conductor?

  • PhiowPhi
  • · Replies 10 ·
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10

Graduate Ampere's law for a larger diameter?

  • PhiowPhi
  • · Replies 4 ·
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4

Graduate Maxwell equations in terms of potentials

  • olgerm
  • · Replies 9 ·
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9

High School Direction of current? Pos to neg?

  • kolleamm
  • · Replies 13 ·
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13

Graduate Question regarding Faraday's law on induction

  • Landru
  • · Replies 2 ·
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2

Graduate Approximating Field of Permanent Magnet with Micro-Currents?

  • tade
  • · Replies 5 ·
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5

Undergrad How is emf constant of flux linkage is increasing?

  • CAH
  • · Replies 1 ·
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1

Undergrad Why Don't Wires in Our Homes Attract or Repel Each Other Despite AC Currents?

  • PhysicsInNJ
  • · Replies 5 ·
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5

Undergrad Magnetic field on charged cloud

  • d4rr3n
  • · Replies 2 ·
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2

Undergrad Why frequency is more fundamental than wavelength?

  • NIKHEL RAINA
  • · Replies 4 ·
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4

Graduate Question about magnetic flux density B

  • arul_k
  • · Replies 6 ·
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6

Undergrad How to record the frequency of a string using a phone

  • Ordinary
  • · Replies 8 ·
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8

Undergrad Battery Operated Cell Phone Charger

  • Physixs
  • · Replies 2 ·
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2

Graduate Radiation from a Square Loop of Current

  • STosh9
  • · Replies 5 ·
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5

High School Why doesn't the flux through a Gaussian surface change with a change in shape?

  • Idyia
  • · Replies 2 ·
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2

Graduate Equation for photocurrent dep. wavelength, diffusion length,

  • BsNLucky
  • · Replies 2 ·
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2

Undergrad Conservation of charge vs force

  • MullaTheMech
  • · Replies 14 ·
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14

Undergrad Explain EM Drive: A Level Essay Help

  • Falcus
  • · Replies 2 ·
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2

Undergrad Is it possible to estimate a light source wattage remotely?

  • Alfreds9
  • · Replies 1 ·
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1

Graduate Electrostatic potential a a point, the pluses and minuses

  • Nikhil R
  • · Replies 21 ·
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21

Graduate Smashing Electrons: What Would Happen?

  • Mai Mariarti
  • · Replies 3 ·
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3

Undergrad Electric field due to a charged sheet

  • Dexter Neutron
  • · Replies 3 ·
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3

Undergrad Photoelectric Effect: Metal Electron Bonding Explained

  • Karan Punjabi
  • · Replies 9 ·
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9

Undergrad Bar magnet determining north pole

  • Flyx
  • · Replies 18 ·
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18

Undergrad Is it possible to charge a conducting sphere from the inside

  • CinaMarcina
  • · Replies 6 ·
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6

Graduate Electrostatic potential of a charged disk

  • Khaled Yasein
  • · Replies 5 ·
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5

Undergrad E-field of a moving charge at constant velocity

  • STosh9
  • · Replies 2 ·
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2

Undergrad Volumes in Charge symmetry anf distribution problems

  • Vismay
  • · Replies 1 ·
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1

High School Magnetic fields due to currents

  • alex36
  • · Replies 1 ·
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1

Graduate Electric field and electromagnetic waves

  • kent davidge
  • · Replies 7 ·
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7

Undergrad Charge on Conductors - David J Griffiths

  • person_random_normal
  • · Replies 14 ·
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14

Graduate What Makes Electron Volts So Powerful in Relating Mass, Temperature, and Energy?

  • Kevin McHugh
  • · Replies 8 ·
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8

Undergrad How do magnetic "return paths" really work?

  • Landru
  • · Replies 7 ·
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7

Undergrad Creating a Maglev Track using Electromagnets?

  • Hanarchist
  • · Replies 1 ·
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1

Undergrad Charged Capacitor: Opposing Emf Battery Series

  • vijayramakrishnan
  • · Replies 2 ·
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2

Undergrad Can someone me with this question on mag fields?

  • Sgtsloth
  • · Replies 4 ·
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4

Graduate Why doesn't an electron lose energy between components?

  • shrey012
  • · Replies 7 ·
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7