Electromagnetism Forum

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Graduate Find E, circular disk. Radial component of E question.

  • jfierro
  • · Replies 5 ·
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5

Undergrad Does moving charge convert electrical potential energy to electromagnetic fields?

  • user111_23
  • · Replies 6 ·
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6

High School Are Neodymium Magnets Polarized and Shaped Like This?

  • RestlessMind
  • · Replies 11 ·
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11

Graduate Understanding the Poynting Vector Dilemma in Electrical Circuits

  • cak942
  • · Replies 3 ·
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3

Undergrad I was studying avometer, and came across this paragraph which I find

  • uzair_ha91
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1

Undergrad Measuring Water Flow in Fire Hose: Challenges and Solutions

  • WarrickF
  • · Replies 3 ·
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3

Graduate How can the spectral representation of a plane EM wave be found?

  • Madara
  • · Replies 2 ·
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2

Undergrad Why do electric rockets need to be in a vaccum?

  • epicbattle
  • · Replies 1 ·
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1

High School Voltage, Amperage & Tasers: How Little Damage Can Be Done?

  • AutisticAlien
  • · Replies 6 ·
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6

Undergrad Coulomb's Law and Point Charges: Real World vs Theory

  • manofphysics
  • · Replies 4 ·
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4

Graduate E Field Propagation & Metal Bars

  • likephysics
  • · Replies 1 ·
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1

Undergrad Electricity and magnetism field lines

  • DrDanger
  • · Replies 2 ·
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2

Undergrad What is the resultant force on a conducting plate in a magnetic field?

  • munozcim
  • · Replies 4 ·
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4

Undergrad Can an Electron Absorb Higher Frequency Photons to Transition Energy States?

  • 101nancyma
  • · Replies 1 ·
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1

Undergrad Oscillating Electric Field Lines

  • jchodak2
  • · Replies 7 ·
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7

Undergrad How Does Adding a Resistor Affect Capacitor Charging Time?

  • 101nancyma
  • · Replies 2 ·
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2

Undergrad Does Wire Gauge Affect Surface Heating Efficiency in Resistance Heating?

  • madskier8806
  • · Replies 1 ·
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1

Undergrad Solving Electric Circuits: 9V Battery, AC/DC Voltage & More

  • Red_CCF
  • · Replies 21 ·
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21

Graduate Looking for specific magnetic material under pressure

  • MaskedMarvel
  • · Replies 1 ·
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1

Undergrad Moving electrons: magnetic and electric fields

  • ninjadrummer8
  • · Replies 2 ·
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2

Graduate What are these physical quantites in electrodynamics?

  • mma
  • · Replies 2 ·
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2

Graduate Lorentz equation solution for arbitrary E and B fields

  • J Hill
  • · Replies 1 ·
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1

High School How would you use a magnet to test whether or not a piece of metal was magnetic?

  • EskShift
  • · Replies 3 ·
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3

High School How does magnetism induce current

  • Red_CCF
  • · Replies 12 ·
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12

Undergrad Can an Electromagnet Stop a Speeding Vehicle?

  • Droolguy
  • · Replies 5 ·
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5

Graduate What is the physical meaning behind the energy of an electric field?

  • Tac-Tics
  • · Replies 5 ·
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5

Graduate Explain magnets at the subatomic level to me?

  • kashiark
  • · Replies 3 ·
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3

Graduate How can I reduce cable capacitance for my Schering bridge?

  • enamul101b
  • · Replies 2 ·
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2

Graduate Computing Hr and Hz from Magnetic potential

  • rsr_life
  • · Replies 4 ·
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4

Graduate Does a co-accelerated charge radiate?

  • jason12345
  • · Replies 19 ·
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19

High School Do permanent magnets lose strength over time?

  • linux kid
  • · Replies 19 ·
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19

Graduate Why Can't I Use My Indicated Vector ds on a Gaussian Surface?

  • logearav
  • · Replies 4 ·
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4

Undergrad Does EMF Change During Battery Charging?

  • vikcool812
  • · Replies 6 ·
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6

Undergrad Electricity/Water Analogy Fails?

  • jachyra
  • · Replies 16 ·
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16

Undergrad Can someone explain the use of conventional current and voltage in circuits?

  • Red_CCF
  • · Replies 25 ·
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25

Graduate How does a magnetic bottle work?

  • yoran
  • · Replies 11 ·
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11

Graduate Potential energy between two oppositely charged ions in a crystal

  • geoffreythelm
  • · Replies 3 ·
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3

Undergrad Could charges on a sphere cause it to explode?

  • manofphysics
  • · Replies 6 ·
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6

Undergrad Theoretical AC/DC Circuits: 1.5V Light Bulb & Battery

  • Red_CCF
  • · Replies 10 ·
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10

Undergrad Why is the b field inside a thick toroid largest along inner edge

  • Maxwellkid
  • · Replies 6 ·
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6

Undergrad So, How to Use Ampere's Law for Magnetic Fields and Current?

  • Maxwellkid
  • · Replies 7 ·
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7

High School Why does everything electrical we see give its voltage?

  • kaotak
  • · Replies 48 ·
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48

Graduate Cauchy-Lorentz distribution limit

  • TheDestroyer
  • · Replies 2 ·
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2

Undergrad Is Electromagnetism Induced by Electrocution Related to Voltage?

  • PrincePhoenix
  • · Replies 8 ·
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8

Undergrad Photodiode's legs to both the input for a differential amplifier

  • cks
  • · Replies 2 ·
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2

Graduate Magnetic field from a ferrite rod solenoid at 73 kHz

  • woje04
  • · Replies 4 ·
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4

High School Comment: When a metal is heated, there is current (ie flow of e) flowing too

  • klng
  • · Replies 3 ·
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3

Undergrad Force on current carrying conductor

  • uzair_ha91
  • · Replies 2 ·
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2

Graduate Dynamics of charged particles and quantum effects

  • manofphysics
  • · Replies 2 ·
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2

Undergrad Amperes law and electrodynamics and Gauss's law

  • Maxwellkid
  • · Replies 10 ·
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10

High School Coulomb: Understanding the Fundamental Unit of Electric Charge

  • Stripe
  • · Replies 7 ·
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7

Undergrad Understanding Voltage: How Electrical Energy in EM Waves Powers Devices

  • user111_23
  • · Replies 7 ·
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7

Undergrad Calculating Electromagnets for 4T Output without Superconductors

  • microfracture
  • · Replies 7 ·
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7

Undergrad Dropping bar magnet through loop of wire

  • ninjadrummer8
  • · Replies 1 ·
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1

Graduate Debate on Maxwell's Displacement Current

  • trx123
  • · Replies 7 ·
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7

Undergrad Equation for F using flux desnity in solenoid

  • Jake110
  • · Replies 18 ·
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18

High School Can electrical curents flow from generator to transformer

  • rohithreddyk
  • · Replies 5 ·
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5

Undergrad How Does Frequency Affect the Strength of an Electromagnet?

  • ymhtr
  • · Replies 3 ·
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3

High School Igniting Gunpowder with a Battery

  • Il Buono
  • · Replies 14 ·
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14

Graduate Calculation of wavelength of EMW produced due to an accelerated charged particle

  • ritesh goel
  • · Replies 1 ·
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1

Undergrad Learn Maxwell's Equations: A Beginner's Guide

  • rockyshephear
  • · Replies 18 ·
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18

High School What is the relationship between voltage and capacitance?

  • wavingerwin
  • · Replies 5 ·
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5

Undergrad Electric Resistance: Causes & Theory

  • jobyts
  • · Replies 3 ·
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3

Undergrad Voltage divider and potentiometer

  • uzair_ha91
  • · Replies 1 ·
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1

High School Electromagnet design for 10-15kg holding force in a harness

  • Nagarok
  • · Replies 3 ·
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3

Undergrad Are electrons the only thing that emits light?

  • um0123
  • · Replies 15 ·
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15

Graduate What is the actual definition of the TM mode?

  • dayan83
  • · Replies 2 ·
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2

High School Do Magnets Affect Light Paths?

  • menniandscience
  • · Replies 1 ·
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1

Undergrad Can a Circular Magnetic Field Accelerate Charged Particles Without a Wire?

  • hulkhogan
  • · Replies 22 ·
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22

Undergrad Would a positively charged body stick to normal matter?

  • DARTZ
  • · Replies 4 ·
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4

Undergrad Can Wireless Power Transmission Achieve the Speed of Light?

  • electricsound
  • · Replies 17 ·
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17

Graduate Witricity - I'd like some opinions

  • ford2go
  • · Replies 9 ·
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9

Graduate A thought experiment involving inductors

  • bitrex
  • · Replies 10 ·
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10

Undergrad Understanding the Nature of Electric Fields

  • rockyshephear
  • · Replies 15 ·
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15

Undergrad How Does a Battery Influence Electric Fields and Electron Energies?

  • user111_23
  • · Replies 3 ·
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3

What is better to do when electricity goes out?

  • blossom
  • · Replies 6 ·
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6

Undergrad Understanding Electricity Flow in a Conductive T-Shape Structure

  • KingOrdo
  • · Replies 12 ·
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12

Undergrad How do I convert mass to force for measuring shell resistance?

  • BrentMW
  • · Replies 2 ·
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2

High School Why should you need to know the electric current in a circuit?

  • user111_23
  • · Replies 16 ·
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16

Undergrad Are Electricity and Magnetism Related or Inverses of Each Other?

  • thomasxc
  • · Replies 6 ·
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6

High School Why 1000s of acres antenna needed?

  • kewl_123
  • · Replies 6 ·
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6

Undergrad Why electric flux isn't about counting field lines

  • rockyshephear
  • · Replies 37 ·
2
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37

Undergrad Can I Use Motors to Create an Efficient Electric Load Simulator?

  • Dan Kerr
  • · Replies 2 ·
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2

Graduate Could Electrons Have an Internal Structure That Explains Wave-Particle Theory?

  • ghostanime2001
  • · Replies 2 ·
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2

Undergrad Explanation regarding electric potential energy

  • uzair_ha91
  • · Replies 2 ·
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2

Undergrad High voltage spark and air compression

  • lortech
  • · Replies 3 ·
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3

Graduate Back of the Envelope Calculation of Earth's Charge

  • Nirgal
  • · Replies 15 ·
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15

Graduate No Such Thing As Magnetic Flux Density

  • rockyshephear
  • · Replies 13 ·
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13

Graduate Del dot E equals 0 and Del dot B equals 0, both in a vacuum

  • rockyshephear
  • · Replies 24 ·
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24

Undergrad Metal Shavings vs infinite lines of flux

  • rockyshephear
  • · Replies 2 ·
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2

Undergrad What is an electric field, really?

  • rockyshephear
  • · Replies 4 ·
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4

Graduate Hysteresis in Hall Probe Calibration Curve

  • TheDestroyer
  • · Replies 5 ·
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5

Graduate How Does Charge Conservation Apply to Matter-Energy Conversion?

  • Itai Blank
  • · Replies 1 ·
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1

Undergrad Electromagnetic Lasers: A Physics/Engineering Project

  • Moebius_Prime
  • · Replies 5 ·
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5

Undergrad Electric/magnetic lines of force's fundamental property.

  • dE_logics
  • · Replies 12 ·
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12

Undergrad What Is the True Nature of Electricity and Electric Current?

  • mopc
  • · Replies 41 ·
2
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41

Graduate Noone really knows what an electric field is

  • rockyshephear
  • · Replies 31 ·
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31

High School Finding the Live Wire: How to Tell Neutral from Live in Household Plugs

  • Geobio
  • · Replies 2 ·
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2

High School Can Induction Charge Objects in Electrostatics?

  • Awsom Guy
  • · Replies 2 ·
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2

Graduate Low frequency magnetic communication

  • enroger
  • · Replies 9 ·
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9