Electromagnetism Forum

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High School Resistance and Heat: The Truth about Wire Resistance in Circuits

  • jsmith613
  • · Replies 3 ·
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3

Undergrad Are Eddy Current Forces Always Opposing Motion?

  • Rikki Lee
  • · Replies 10 ·
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10

Graduate Potential due to a line charge

  • jason12345
  • · Replies 3 ·
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3

Graduate Current in a Superconducting Loop

  • ashokanand_n
  • · Replies 20 ·
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20

High School Is the Speed of Light the Same for All Electromagnetic Frequencies?

  • tenacity2986
  • · Replies 4 ·
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4

Graduate Electric Potential Normalization

  • makhoma
  • · Replies 1 ·
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1

High School Difference between Resistance and resistivity

  • SpartanG345
  • · Replies 3 ·
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3

High School What is voltage gradient good for? (Read post first)

  • user111_23
  • · Replies 19 ·
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19

High School Orientation of coil in electric generator: Important?

  • Antic_Hay
  • · Replies 3 ·
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3

High School Wondering how to wire led series

  • darrylmcl
  • · Replies 1 ·
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1

Undergrad What are some ways to improve wireless energy transfer using coil antennas?

  • olek1991
  • · Replies 11 ·
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11

High School Can Magnetized Needles Create a Magnetic Monopole Effect?

  • mg0stisha
  • · Replies 11 ·
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11

Undergrad How Can I Measure the Strength of a Magnet for Building a Larger Levitron?

  • Demonis
  • · Replies 5 ·
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5

High School Why does the inside of a conductor have the same electric potential everywhere?

  • lifeiseasy
  • · Replies 3 ·
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3

Graduate On Electromagnetic Radiation and how it propagates through space.

  • Repainted
  • · Replies 9 ·
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9

Undergrad What causes the potential (voltage) in a conductor to rise?

  • parsec
  • · Replies 47 ·
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47

High School Potential Energy Regarding Magnets

  • RestlessMind
  • · Replies 2 ·
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2

Graduate Question about spherically symmetric charged objects

  • simpleton
  • · Replies 4 ·
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4

Graduate Are Field Boundaries Absolute in Space?

  • spacebear2000
  • · Replies 7 ·
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7

Undergrad Electromagnetic force and resistance to displacement of atoms.

  • PrincePhoenix
  • · Replies 1 ·
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1

High School Does a Single Charge Create an Electric Field?

  • donaldson1967
  • · Replies 6 ·
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6

Undergrad Electric Flux Density / Electric Field Intensity

  • zaydana
  • · Replies 1 ·
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1

Undergrad Understanding EM wave propagation

  • spacebear2000
  • · Replies 9 ·
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9

Undergrad EM Field vs EM Wave: Understanding Distance & Strength Differences

  • spacebear2000
  • · Replies 1 ·
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1

Graduate Induced charge in conducting plate

  • astro2cosmos
  • · Replies 2 ·
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2

Undergrad Why an antenna cannot receive analogue baseband signal of 0-4000Hz?

  • dandeliondrea
  • · Replies 5 ·
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5

Undergrad Dielectric constant, metals, frequency a bit confused

  • MadMax
  • · Replies 11 ·
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11

Undergrad Tuning Gemstones: Can Frequency Really Be Managed?

  • Cyrus80772
  • · Replies 1 ·
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1

Undergrad Electromagnetic standing waves measurement

  • Pierre007080
  • · Replies 14 ·
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14

Graduate Particle disturbance by passing EM wave reveals momentum of EM wave?

  • jaketodd
  • · Replies 21 ·
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21

Undergrad Thermocouple voltage compensator

  • danja
  • · Replies 8 ·
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8

Undergrad How Close Do You Need to Be to High Voltage Power Lines to Induce Current?

  • bricevan
  • · Replies 8 ·
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8

Graduate Electromagnetic properties tables

  • jvranish
  • · Replies 1 ·
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1

High School How Does Increasing Current Affect Charge Flow in Circuits?

  • Red_CCF
  • · Replies 11 ·
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11

Graduate Proof that e-field lines don't cross

  • vortmax
  • · Replies 3 ·
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3

Undergrad Can beat frequencies occur when the amplitude of the waves are different?

  • Dekans6
  • · Replies 2 ·
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2

Undergrad How would i go about doing this.

  • Learnphysics
  • · Replies 1 ·
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1

Graduate Hysteresis: Magnetism Lags Behind Current

  • uzair_ha91
  • · Replies 4 ·
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4

Graduate How was Coulomb's law figured out?

  • physics_head
  • · Replies 6 ·
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6

High School The magnetic field of a solenoid

  • poojarao
  • · Replies 1 ·
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1

Graduate Verifying the Radiating Long Solenoid with AC Current

  • sanjibghosh
  • · Replies 3 ·
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3

High School How to get high voltage but NO amps

  • wix
  • · Replies 18 ·
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18

Undergrad Stability of electrical charges

  • fluidistic
  • · Replies 2 ·
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2

Undergrad Negative Feedback Example: Gain & Feedback Factor

  • iitjee10
  • · Replies 3 ·
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3

High School Are Current, Potential, and Potential Difference Scalar or Vector Quantities?

  • Red_CCF
  • · Replies 24 ·
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24

Graduate Does a constant electric flux produce a current?

  • eoghan
  • · Replies 5 ·
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5

Graduate Size of a Diamagnetic for Levitation

  • moejoe
  • · Replies 1 ·
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1

High School Electric flux related to perpendicular suf?

  • hermtm2
  • · Replies 12 ·
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12

High School What are the materials needed to make a simple electromagnetic bell?

  • desi101
  • · Replies 4 ·
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4

Undergrad Why is the unit of flux density different from the unit of electric flux?

  • yash25
  • · Replies 10 ·
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10

Undergrad When a DC flows through a wire, does the electric field vary?

  • uzair_ha91
  • · Replies 1 ·
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1

High School Why does electric charge reside on the outer surface of a conductor?

  • logearav
  • · Replies 18 ·
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18

High School Why does elecricity kill? What causes a magnet to be a magnet?

  • PrincePhoenix
  • · Replies 9 ·
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9

Undergrad Understanding the Charge on Alpha Particles

  • Thevanquished
  • · Replies 3 ·
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3

Graduate Curl of E for Charged Particle: Possibility?

  • astro2cosmos
  • · Replies 4 ·
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4

Undergrad Proving thevenin's theorm correct.

  • dE_logics
  • · Replies 2 ·
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2

Undergrad Demagnetization of repelling poles

  • Hypochondriac
  • · Replies 1 ·
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1

Graduate How is the equation for impedance in a parallel resonance LC circuit derived?

  • uzair_ha91
  • · Replies 3 ·
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3

Undergrad Is there current induced in a solenoid in an open circuit?

  • Jam Jay
  • · Replies 15 ·
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15

Undergrad What is the role of the electric field in a battery?

  • user111_23
  • · Replies 5 ·
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5

Undergrad Explaining F=BIl and F=Bqv for Many Charges

  • poojarao
  • · Replies 4 ·
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4

Undergrad Calculating Current in Parallel Plate with Positive and Negative Charges

  • IPwnNubs
  • · Replies 9 ·
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9

Undergrad Eddy Current Pendulum: How Does it Work?

  • ElectroJ
  • · Replies 2 ·
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2

Undergrad A.C. Circuits: Graphs & Voltage/Current Curves

  • uzair_ha91
  • · Replies 6 ·
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6

Working model of a permanent magnet?

  • Gravitron
  • · Replies 2 ·
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2

Graduate Electric and Magnetic fields of light

  • tigor
  • · Replies 8 ·
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8

Graduate Magnetic field detectable around axis of laser beam?

  • Gravitron
  • · Replies 2 ·
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2

Graduate Would super-conducting of space itself create electromagnet fields?

  • the_awesome
  • · Replies 1 ·
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1

Graduate Parallel line currents & Lorentz transformation

  • Preno
  • · Replies 2 ·
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2

Undergrad A doubt on self inductance and mutual inductance

  • ayush123
  • · Replies 3 ·
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3

High School Role of Capacitors in Automotive Ignition, Power Supply & Radio Tuning

  • logearav
  • · Replies 42 ·
2
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42

Graduate Obtaining A(r) Using Ampere's Law: Question on a Past Paper

  • RyanBoulton
  • · Replies 2 ·
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2

Undergrad Understanding Eddy Currents: Causes, Effects, and Mitigation

  • DrDanger
  • · Replies 6 ·
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6

Undergrad Dipole Electric Field Drop: Understanding 1/r^3 Decay

  • staetualex
  • · Replies 4 ·
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4

Undergrad The Deceptive Nature of Field Lines

  • astro2cosmos
  • · Replies 3 ·
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3

Graduate Modelling electromagnetic wave reflection

  • niko2000
  • · Replies 1 ·
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1

Graduate Don't understand something in proof

  • WiFO215
  • · Replies 10 ·
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10

Undergrad Free-fall formula, adding air resistance

  • Nim
  • · Replies 13 ·
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13

Undergrad What Does Negative Voltage Really Mean in Different Electrical Contexts?

  • Red_CCF
  • · Replies 32 ·
2
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32

Undergrad Do Magnetic Fields Actually Perform Work?

  • Substance D
  • · Replies 1 ·
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1

Graduate What is the relationship between magnetism and electron movement?

  • Paper
  • · Replies 4 ·
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4

Graduate Resistance of a trapezoidal geometry

  • acme
  • · Replies 7 ·
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7

Graduate How can I calculate the magnetic field of a relativistic muon?

  • magphys
  • · Replies 6 ·
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6

Undergrad Electrostatic force on a charge

  • astro2cosmos
  • · Replies 7 ·
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7

Undergrad Field Lines of Charged Particles: Speed & Emissions

  • astro2cosmos
  • · Replies 8 ·
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8

Graduate Van der Waals equation of state and Maxwell construction

  • TheDestroyer
  • · Replies 11 ·
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11

High School Magnetic repulsion Hover Boards

  • Humunaha
  • · Replies 16 ·
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16

High School How does a battery charger work?

  • kky
  • · Replies 2 ·
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2

Graduate You are subscribed to this thread L di/dt vs. i dL/dt kmarinas86

  • kmarinas86
  • · Replies 1 ·
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1

High School Understanding Guass and the Strength of Magnets: A Simple Explanation

  • RestlessMind
  • · Replies 2 ·
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2

Graduate Do only electrons emit a photon when accelerated in EM field?

  • Edi
  • · Replies 3 ·
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3

Undergrad The 'why' of electromagnetic induction

  • JanClaesen
  • · Replies 1 ·
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1

Graduate Problem from Griffiths confused me

  • WiFO215
  • · Replies 2 ·
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2

Graduate Question Concerning Gauss' Law

  • jslam
  • · Replies 3 ·
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3

High School Are the magnetic forces of 'push' and 'pull' equal?

  • RestlessMind
  • · Replies 2 ·
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2

Undergrad A question about charged bodies/gravitation

  • fluidistic
  • · Replies 15 ·
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15

High School What happens, when you are trying to magnetize some iron bar?

  • scientist91
  • · Replies 17 ·
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17

Graduate Is a Magnetic Field B with Curl B = 0 Possible?

  • naftali
  • · Replies 4 ·
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4

Undergrad How to: compute Watts and Calories for for a bicycle, up a hill

  • wmazz
  • · Replies 1 ·
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1

Undergrad How to measure quantity of electricity without Coulomb law?

  • Naoki Shibuya
  • · Replies 4 ·
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4