Electromagnetism Forum

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Undergrad Is electricity faster than light?

  • ShawnD
  • · Replies 23 ·
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23

Graduate What is the force exerted on an electron if it absorbs a photon with frequency v

  • az2212
  • · Replies 13 ·
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13

Graduate Question about maxwell's equations

  • rakeshbs
  • · Replies 18 ·
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18

Graduate Negative Voltage vs. Negative Pressure

  • kmarinas86
  • · Replies 2 ·
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2

Undergrad Another light thread more electromagnetic

  • disregardthat
  • · Replies 4 ·
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4

Graduate Intuitive explanation why frequency is fixed

  • pivoxa15
  • · Replies 8 ·
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8

Undergrad Magnet Force: Calculate Force from 1T Magnet & Iron

  • rukidding
  • · Replies 5 ·
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5

Undergrad Mechanical force and the electrical force generated by a magnet

  • BeerFizz
  • · Replies 4 ·
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4

High School Some Questions pestering me , Help

  • daemonakadevil
  • · Replies 2 ·
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2

Undergrad Why do electric devices get burnt during thunderstorms

  • antonantal
  • · Replies 1 ·
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1

Undergrad Electricity Doubt: Is Electric Field Inside Conductor?

  • prashant3507
  • · Replies 1 ·
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1

High School Can you measure watts through heat?

  • dontdisturbmycircles
  • · Replies 14 ·
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14

Undergrad Electron Gun Grounding: Best Practices for Photoemission Experiments

  • mtanti
  • · Replies 7 ·
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7

High School Can Two 15 Ohm 1/2 Watt Resistors Be Used for a 1.8 Watt Requirement?

  • Russell233
  • · Replies 2 ·
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2

Undergrad Electric Discharge Patterns: Coincidence or Controlled Pathways?

  • algaidaman
  • · Replies 9 ·
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9

High School Understanding Magnetic Field Hand Rules

  • Mceestix
  • · Replies 3 ·
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3

High School Can gases conduct electricity?

  • pivoxa15
  • · Replies 14 ·
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14

High School How to identify a magnet from a metal bar

  • OAR404
  • · Replies 3 ·
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3

Undergrad Changing state from solid to liquid by application of electric current

  • roger5
  • · Replies 16 ·
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16

High School Radio Waves: Shielding & Blocking Long Wavelengths

  • RobbieTheRobot
  • · Replies 9 ·
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9

Energy from permanent magnets alone

  • vijayanand
  • · Replies 1 ·
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1

Graduate References on Maxwell's Velocity Distribution

  • DaTario
  • · Replies 3 ·
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3

High School Learn About Voltage, Current & Resistance

  • Air
  • · Replies 24 ·
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24

Graduate A solved problem from Griffiths creats problem

  • Kolahal Bhattacharya
  • · Replies 1 ·
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1

Undergrad Do Currents Exhibit Inertia Even Without Inductance?

  • lark
  • · Replies 34 ·
2
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34

Graduate Applying Newton's 2nd law to single charged particle

  • Kolahal Bhattacharya
  • · Replies 15 ·
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15

Undergrad Electromagnetism issues need clearing up

  • ppyadof
  • · Replies 2 ·
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2

Undergrad Electric Field Strength H Units - Ampere Turns/Meter?

  • ultimateguy
  • · Replies 8 ·
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8

Undergrad Difference between a ferromagnet and a paramagnet?

  • ultimateguy
  • · Replies 6 ·
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6

Undergrad What Happens When a Super-Strength Magnet Spins in Space?

  • ChongFire
  • · Replies 2 ·
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2

Undergrad Are electron-flow and chemical change inside a dry-cell, separate event?

  • Ahmed Abdullah
  • · Replies 2 ·
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2

Undergrad Understanding LC Circuits: Voltage & Current Explained

  • rich t
  • · Replies 2 ·
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2

High School Current Inside long cylindrical Conductor

  • Tom McCurdy
  • · Replies 1 ·
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1

Graduate Maxwell's equations: a quick check

  • DivGradCurl
  • · Replies 4 ·
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4

Graduate Electric field arising from a uniform charge distribution of infinite extent

  • su2
  • · Replies 12 ·
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12

Graduate Magnetisation is a dynamical situation of moving charges

  • pivoxa15
  • · Replies 3 ·
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3

Undergrad What is the magnitude of the Electric field inside a light wave?

  • silverdiesel
  • · Replies 3 ·
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3

Undergrad Calculating Induced EMF in a Coil with Uniform Magnetic Field

  • Sir_Pogo
  • · Replies 3 ·
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3

Undergrad Why is current considered a scalar in physics textbooks?

  • quantumlight
  • · Replies 2 ·
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2

High School What is the internal resistance of a battery?

  • Sakhawat Hossain
  • · Replies 2 ·
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2

Undergrad Does Distance Matter in the Definition of an Electron Volt?

  • davidong3000
  • · Replies 11 ·
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11

High School Electric Charge & Resistance: Is There a Relationship?

  • ccl4
  • · Replies 1 ·
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1

Undergrad Changing polarization of a magnet for a project of mine

  • alasz11
  • · Replies 15 ·
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15

High School Electric Cell vs Circuit: What's the Difference?

  • pavel987
  • · Replies 1 ·
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1

High School Why are pitch and frequency similiar to loudness and intensity?

  • batman
  • · Replies 3 ·
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3

High School Gravity and Magnetism (Beginner Question)

  • Raza
  • · Replies 18 ·
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18

High School Why do We Get a Magnetic Field Around Current Carrying Conductor?

  • doniv
  • · Replies 14 ·
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14

Undergrad Electrical current and direction of magnetic field

  • SAZAR
  • · Replies 53 ·
2
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53

Undergrad Good resource to teach myself E&M

  • stinlin
  • · Replies 11 ·
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11

Graduate Do electric fields extend to infinity and exert momentum on charges?

  • pivoxa15
  • · Replies 19 ·
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19

Graduate Why does my textbook only show magnetostatics when curl of H = 0?

  • pivoxa15
  • · Replies 9 ·
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9

Graduate What Determines the Mode of Propagation in Wave Guides?

  • quasar987
  • · Replies 5 ·
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5

High School How Can We Use Magnetix in 9th Grade Physical Science?

  • Robert100
  • · Replies 5 ·
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5

Undergrad What is the significance of the A field in understanding the Marinov Motor?

  • Jdo300
  • · Replies 4 ·
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4

Undergrad What Do Electric and Magnetic Fields Look Like in a Spark Gap Discharge?

  • Jdo300
  • · Replies 10 ·
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10

Undergrad Understanding Voltmeters: How They Work and Common Misconceptions

  • pivoxa15
  • · Replies 1 ·
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1

Undergrad Is not possible the magnetic field to accelerate charges?

  • mlazos
  • · Replies 20 ·
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20

High School Capacitor Plates: E Field Outside or Between Plates?

  • Jdo300
  • · Replies 9 ·
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9

Undergrad Breakdown voltage of dry air compared to humid air, how much of difference?

  • Agnostic
  • · Replies 3 ·
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3

Undergrad Ceramic Supercapacitors: Materials and Advantages Explained

  • NotMrX
  • · Replies 1 ·
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1

Undergrad Debate: Speakers Use Ohms or Volts?

  • way2lazy2care
  • · Replies 15 ·
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15

Undergrad How Can I Dimension an Electromagnet for Maximum Strength?

  • Coster
  • · Replies 7 ·
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7

High School If light is a electromagnetic wave

  • ahsaas
  • · Replies 1 ·
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1

Undergrad Necessity of charge rearragement in capacitors for equal potential differences

  • animalcroc
  • · Replies 1 ·
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1

Graduate Making analogy between fluid mechanical and electrical system

  • Micko
  • · Replies 4 ·
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4

High School Enhancing My VDG: Can I Get Better Power?

  • ExStorm1
  • · Replies 20 ·
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20

Undergrad Explaining paramagnetism, diamagnetism, and ferromagnetism

  • physics231
  • · Replies 1 ·
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1

Undergrad Oddball thought experiment with electrons

  • Jdo300
  • · Replies 9 ·
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9

High School Magnetic Attraction: The North Pole & Earth's Geographic North

  • Zinc
  • · Replies 9 ·
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9

What is this flux made out of?

  • THE 1
  • · Replies 4 ·
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4

Undergrad Plunger Force of Solenoid: Am I Missing Something?

  • Greg Freeman
  • · Replies 4 ·
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4

Undergrad Solving the Physics Riddle: A Current Across a Single Resistor

  • Tom McCurdy
  • · Replies 6 ·
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6

Undergrad Understanding the behavior of E fields inside wires

  • Jdo300
  • · Replies 1 ·
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1

High School Can I Control the Current During Electrolysis Using a 9 Volt Battery?

  • benhall2121
  • · Replies 2 ·
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2

Graduate Is Lorentz Force Truly Conservative?

  • gulsen
  • · Replies 27 ·
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27

Graduate What is Classical Electromagnetism?

  • Astronuc
  • · Replies 1 ·
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1

Graduate Redepositing electrons on photocathode ?

  • starman2006
  • · Replies 1 ·
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1

Undergrad Why Do We Use Weak Electromagnets in Common DC Motors?

  • Outrunnersarecool
  • · Replies 10 ·
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10

High School EM Wave in Vacuum: How Does It Travel?

  • abdo375
  • · Replies 14 ·
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14

Graduate Earnshaw's Theorem and charges

  • pivoxa15
  • · Replies 9 ·
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9

Undergrad Could a large outrunner reduce electric bill?

  • Outrunnersarecool
  • · Replies 13 ·
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13

High School Are atoms electrically neutral?

  • Ahmed Abdullah
  • · Replies 3 ·
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3

Undergrad Understanding Energy Propagation in Electric Circuits - amasci.com

  • Emanresu
  • · Replies 13 ·
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13

Undergrad Free Electrons in Conductors: Random Motion and Energy Loss

  • Karthikeyan
  • · Replies 8 ·
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8

Undergrad What Determines the Strength of Gravity and Electrostatic Forces?

  • benzun_1999
  • · Replies 13 ·
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13

Undergrad Motion under repulsive electrostatic force

  • lark
  • · Replies 4 ·
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4

Undergrad Electric Fields in Faraday cages

  • caybo
  • · Replies 11 ·
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11

Graduate Blackett effect and Earth's magnetic field

  • pseudovector
  • · Replies 2 ·
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2

High School Increasing the amount of volts would have an effect

  • geenious
  • · Replies 6 ·
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6

High School The Parallel Plate Capacitor and Gauss Law

  • pinal08854
  • · Replies 1 ·
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1

High School Where does the Symbol B for Magnetic Flux Density Come From?

  • thebigcheese
  • · Replies 7 ·
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7

Undergrad Laser providing a electrical path of low resistance

  • Fion
  • · Replies 10 ·
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10

High School When a battery will no longer produce current

  • John Galt
  • · Replies 4 ·
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4

Graduate How would plasmagnetic levitation be used to levitate an object?

  • geenious
  • · Replies 4 ·
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4

Graduate Magnetic permeability of water vapour

  • shellysharma
  • · Replies 2 ·
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2

Undergrad Capacitance in Series: Questions for David

  • meldave00
  • · Replies 35 ·
2
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35

High School Strange Magnets: Unusual Experiments & Free Energy

  • androz
  • · Replies 2 ·
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2

High School Can Metal Cause Electronic Interference?

  • Cyrus
  • · Replies 13 ·
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13

Undergrad Why does C=Eo*Er*(A/d) equate to parallel plates?

  • tommyers
  • · Replies 4 ·
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4

Undergrad Can Metal Plate Connected to +ve Battery Terminal Get Charged?

  • bobca117
  • · Replies 2 ·
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2