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High School Where does the kinetic energy come from when iron is attracted to a magnet?

  • goodboy
  • · Replies 3 ·
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3

Undergrad Eddy current equation question

  • hover
  • · Replies 3 ·
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3

Undergrad DC Grids: A Thing of the Past or the Future?

  • John Galt
  • · Replies 22 ·
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22

Undergrad Can Switching Magnetic Fields in a Coil Generate Energy?

  • linux kid
  • · Replies 8 ·
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8

Undergrad Geometric optics vs Electromagnetic waves

  • pivoxa15
  • · Replies 14 ·
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14

High School Charge of Radon Nucleus: 86 Protons -1.6x10^-19 C

  • poteat86
  • · Replies 2 ·
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2

Undergrad Relationship Between Impedance, Reactance & Resistance in R Circuit

  • momomo_mo
  • · Replies 6 ·
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6

High School Regarding the Earth's magnetic field

  • baryon
  • · Replies 8 ·
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8

High School Magnet's feild strength decrease when it interacts with an object?

  • GiTS
  • · Replies 5 ·
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5

Graduate Are Monochromatic Plane Wave Solutions Viable in Conductive Dielectrics?

  • quasar987
  • · Replies 3 ·
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3

High School Why Charge Accumulates at Edges/Corners?

  • tommyers
  • · Replies 3 ·
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3

Undergrad Understanding RC and LR High/Low Pass Filters & Radio Tuning Circuits

  • momomo_mo
  • · Replies 3 ·
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3

High School Do Permanent Magnets Have Magnetic Fields?

  • linux kid
  • · Replies 1 ·
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1

Graduate Induced charge density by non-uniform dipole density in dielectric?

  • quasar987
  • · Replies 1 ·
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1

Graduate What is the role of special relativity in explaining magnetism?

  • pivoxa15
  • · Replies 17 ·
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17

Undergrad Accelerated Charge: Understand Electromagnetic Wave Emission

  • quasar987
  • · Replies 7 ·
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7

Undergrad Clear Up My Misconception: Magnet & Magnetic Force Work w/o Energy?

  • Gelsamel Epsilon
  • · Replies 7 ·
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7

High School Electric Current: Explaining Electron Flow

  • Fizziks_Fan
  • · Replies 2 ·
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2

High School What force drives electron movement in electricity generators?

  • nonstop
  • · Replies 11 ·
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11

Graduate Can Electromagnetism Affect Water Molecules and Change the Earth's Spin?

  • onemillionthmonkey
  • · Replies 19 ·
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19

Undergrad Current: Why It's the Fundamental Unit & What Defines It

  • ajay mahajan
  • · Replies 7 ·
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7

Undergrad What meaning is divergence and curl?

  • HeilPhysicsPhysics
  • · Replies 3 ·
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3

High School How does a current do useful work?

  • pivoxa15
  • · Replies 2 ·
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2

High School Can a magnet be made by friction?

  • TuviaDaCat
  • · Replies 21 ·
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21

Non Magentic Screw Driver Magnetized

  • phibonacci
  • · Replies 7 ·
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7

Graduate Question from a noob to the forum regarding current research in Physics

  • tiyusufaly
  • · Replies 5 ·
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5

Undergrad High frequency high power alternating current

  • axawire
  • · Replies 2 ·
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2

Graduate Is Modeling or Pure Mathematical Equations Better for Analyzing Capacitors?

  • tommyers
  • · Replies 1 ·
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1

Graduate Grad, div and curl explanations

  • tommyers
  • · Replies 10 ·
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10

Undergrad Comparing Capacitance: Square vs. Circle Capacitor

  • OPIH
  • · Replies 3 ·
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3

Undergrad How is Charge Born? - Explained for Tom

  • tommyers
  • · Replies 19 ·
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19

Graduate Levitating magnet and rotating superconductor,

  • labview1958
  • · Replies 13 ·
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13

Undergrad Need to understand about the photoelectric effect

  • sssddd
  • · Replies 3 ·
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3

High School Whenever you hold rode A, you don't get electricuted

  • superweirdo
  • · Replies 18 ·
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18

Undergrad Electrostatic Influence Machines

  • Jdo300
  • · Replies 1 ·
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1

Undergrad Potential Energy +ions/-ions: Attraction/Repulsion?

  • momomo_mo
  • · Replies 3 ·
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3

High School Magnetic poles(repulsion+attraction)

  • superweirdo
  • · Replies 4 ·
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4

Graduate What are the FULL classical electrodynamic equations?

  • pellman
  • · Replies 30 ·
2
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30

Undergrad The direction of flow of electrons

  • momomo_mo
  • · Replies 9 ·
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9

Undergrad Aluminium Oxide as a dielectric

  • tommyers
  • · Replies 9 ·
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9

Undergrad Why Can't Permanent Magnets Generate Free Electricity?

  • brentd49
  • · Replies 9 ·
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9

Graduate Re: Shielding Magnetic Fields of Permanent Magnets

  • miloko
  • · Replies 1 ·
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1

High School Why does the compass spin when a current passes?

  • pivoxa15
  • · Replies 8 ·
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8

Graduate Magnetic Permeability and Electric Permittivity effects on atomic clocks

  • kmarinas86
  • · Replies 5 ·
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5

Undergrad Understanding Capacitors - Form & Function

  • 3trQN
  • · Replies 4 ·
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4

High School Color ( Frequency or Wavelength ) ?

  • opticsman
  • · Replies 10 ·
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10

Undergrad Why Are Alloys More Effective for Magnetic Shielding Than Single Elements?

  • miloko
  • · Replies 1 ·
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1

Undergrad Permanent Magnets: Electromagnetic Wave Propagation?

  • miloko
  • · Replies 4 ·
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4

Graduate Electron Redistribution and Self-Repulsion in Antennas

  • Firefox123
  • · Replies 4 ·
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4

Graduate How do you determine the natural frequency of a solid?

  • pivoxa15
  • · Replies 4 ·
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4

Undergrad Calculating Capacitor Variance/Uncertainty

  • blog
  • · Replies 3 ·
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3

Undergrad Calculation behind Fringing Field Sensor

  • tommyers
  • · Replies 11 ·
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11

Undergrad Calculating Thevenin Voltage in Circuit w/Load Resistor

  • esmeco
  • · Replies 2 ·
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2

High School Do Electric Charges Exert a Force on Themselves?

  • hrishikesh
  • · Replies 16 ·
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16

High School How To Communicate In An Emp Zone?

  • mummyboy11
  • · Replies 8 ·
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8

High School What causes heat in a short circuit and what does short circuit mean?

  • Noesis
  • · Replies 2 ·
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2

Undergrad Does a decreasing current create an induced electric field in a magnetic field?

  • quasar987
  • · Replies 7 ·
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7

Undergrad Piezoelectric Materials Prototype

  • ohlhauc1
  • · Replies 1 ·
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1

Undergrad Thread about the MIT prof claiming an incorrect usage of KVL in RL circuits

  • leright
  • · Replies 3 ·
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3

High School Basic info on the subject of acoustics

  • brent
  • · Replies 2 ·
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2

High School Different forms of energy are coverted into electrical impulses

  • nath_quam
  • · Replies 5 ·
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5

Undergrad Dielectric Constants from solids to pellets

  • tommyers
  • · Replies 5 ·
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5

Graduate Alternative current to hall probe

  • feynmanism
  • · Replies 1 ·
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1

High School Boiling water by high frequency AC current

  • Ian
  • · Replies 5 ·
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5

High School High volt result low amp, why?

  • sleepsleep
  • · Replies 16 ·
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16

High School Solar Panel Efficiency: 13.1% Electric, 86.9% Thermal

  • xharville
  • · Replies 1 ·
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1

Graduate Dielectric Cube in a uniform electric field

  • TGarzarella
  • · Replies 10 ·
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10

High School How to demagnetize a steel shaft

  • mike gibson
  • · Replies 1 ·
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1

Graduate Conformal Mappings: A Powerful Tool for Solving Electrostatic Problems

  • tommyers
  • · Replies 11 ·
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11

Undergrad What is the Relationship Between Electromagnetic Amplitude and Power?

  • shintashi
  • · Replies 3 ·
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3

Graduate How Does the Reynolds Transport Theorem Apply to Electromagnetics?

  • Cyrus
  • · Replies 1 ·
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1

Graduate Existence of fringe effects with a capacitor

  • wimvd
  • · Replies 2 ·
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2

High School Chemical charge the same as electrical?

  • GiTS
  • · Replies 1 ·
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1

Graduate EM Spectrum Limits: Frequency, Temperature & Planck Time

  • sneez
  • · Replies 15 ·
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15

High School Where Can I Find Complex Electric Circuit Diagrams for High School Students?

  • brokentruce
  • · Replies 1 ·
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1

Undergrad How can I harness the current induced in a Faraday cage for practical use?

  • caybo
  • · Replies 1 ·
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1

High School Learning electromagnetic induction for a bobsled project

  • Robin07
  • · Replies 4 ·
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4

Undergrad Can Protons in Hydrogen Fuel Cells Generate Electrical Current Like Electrons?

  • professor
  • · Replies 2 ·
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2

Graduate Griffiths' : Electrostatic Energy

  • neutrino
  • · Replies 4 ·
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4

Graduate Hallback Array Closed Loop Coil

  • Robin07
  • · Replies 4 ·
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4

Undergrad How is electromagnetic force related to electromagnetic radiation?

  • deadlyrosebud
  • · Replies 3 ·
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3

High School Which came first - Electricity or Magnetism?

  • kmarinas86
  • · Replies 6 ·
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6

Graduate Trying to simplify a permeability expression

  • NEWO
  • · Replies 2 ·
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2

Undergrad Electric fields are not always superposable

  • ssj5harsh
  • · Replies 2 ·
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2

Undergrad Fundamental Frequency of the earth's crust

  • Ratter
  • · Replies 4 ·
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4

High School How Does the Shocking Roulette Electrical Toy Work?

  • chigga
  • · Replies 3 ·
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3

Graduate Electrons at the speed of light?

  • rcgldr
  • · Replies 3 ·
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3

Graduate How many independent components

  • Ratzinger
  • · Replies 17 ·
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17

High School What produce the earth magnetic fields ?

  • ngkamsengpeter
  • · Replies 29 ·
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29

Undergrad Is it posible to reverse permntly polarity of a permanentmagnet?

  • luxtpm7
  • · Replies 11 ·
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11

Undergrad I know magnetic forces do no work, but

  • ptabor
  • · Replies 15 ·
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15

High School Lifespan of Magnets: Permanent or Not?

  • Aloha
  • · Replies 6 ·
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6

Undergrad How does thermoelectric cooling work?

  • jasc15
  • · Replies 1 ·
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1

High School Why do British Leyland vehicles have notorious electrical issues?

  • linux kid
  • · Replies 11 ·
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11

High School Building a coil gun as a physics project

  • PhysicsIsNeat
  • · Replies 3 ·
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3

Electromagnetism without any finger

  • lalbatros
  • · Replies 7 ·
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7

High School What is wrong with method of making homemade capacitor?

  • Agnostic
  • · Replies 5 ·
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5

Undergrad Electrons flying off a conductor

  • Noesis
  • · Replies 8 ·
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8

Undergrad Electromagnetism: Moving Electrons & Magnetic Fields

  • skywolf
  • · Replies 8 ·
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8

Undergrad Is Displacement Current Used to Explain Non-Flat Capacitor Fields?

  • ovoleg
  • · Replies 4 ·
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4