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Undergrad Magnetic fields and moving electrons

  • Glenn G
  • · Replies 1 ·
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1

Undergrad Why do wires attract each other when current flows in the same direction?

  • Jack98
  • · Replies 7 ·
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7

Undergrad Why Do We Consider External Electric Fields in Gauss' Law Calculations?

  • swirlydragon
  • · Replies 5 ·
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5

Graduate Capacitance between point charge and finite plate

  • Alex555
  • · Replies 4 ·
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4

Graduate Understanding the Electric Field Equation in Electromagnetism

  • davidge
  • · Replies 4 ·
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4

Undergrad Air Resistance & Upward Velocity: Examining the Relationship

  • MarcusK
  • · Replies 4 ·
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4

Graduate Extended Faraday Disk: How is Energy Conserved?

  • Samson4
  • · Replies 7 ·
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7

Undergrad Acoustics & Physics: Is Frequency Linked to Wave Width?

  • F2fHaziq Zaini 93
  • · Replies 4 ·
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4

Undergrad Magnet clamp repelling in coil

  • cluelessGUY
  • · Replies 7 ·
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7

High School Build a Dipole Antenna with LED: Charge Imbalance Explained

  • greypilgrim
  • · Replies 4 ·
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4

Undergrad Not sure what I can make into equivalent resistors

  • egio
  • · Replies 12 ·
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12

Undergrad Voltage across two different circuits

  • Luke0034
  • · Replies 28 ·
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28

Graduate Difference between vibrational, rotational and electron temperature

  • rwooduk
  • · Replies 2 ·
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2

Graduate Does a rotating magnetic field possess angular momentum?

  • Maxwell's Demon
  • · Replies 11 ·
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11

Undergrad Amount of excess charge to overcome Earth's gravity

  • Cato
  • · Replies 12 ·
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12

Undergrad Confusion about the magnetic field

  • Andrew Bernard
  • · Replies 5 ·
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5

Graduate Paradoxes of the Coulomb friction

  • zwierz
  • · Replies 9 ·
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9

High School How to remember what happens to I, V and R in a circuit?

  • IDK10
  • · Replies 10 ·
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10

High School Finding wavelength and fundamental frequency with string

  • rachb75
  • · Replies 2 ·
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2

High School Why is the force pushing electrons downwards in this scenario?

  • Saracen Rue
  • · Replies 3 ·
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3

Undergrad Could Electromagnetic Levitation Create a Feasible Hoverboard Solution?

  • KendaufTheOld
  • · Replies 9 ·
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9

Undergrad Charging a capacitor through a resistor -- final voltage?

  • Kajan thana
  • · Replies 26 ·
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26

Undergrad Faraday Cage and a high voltage discharge arc

  • jaydnul
  • · Replies 6 ·
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6

Undergrad Dielectric Charges: Explaining Why They Don't Attract

  • superslow991
  • · Replies 4 ·
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4

Graduate How do I apply Maxwell's equations?

  • Lasha
  • · Replies 4 ·
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4

Undergrad Does Frequency Change in a Medium?

  • Theudius
  • · Replies 4 ·
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4

Undergrad Dielectric Constant & Electric Field: How It Works

  • jaydnul
  • · Replies 1 ·
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1

Undergrad Comparing inductance and capacitance: Analogy to charge

  • greypilgrim
  • · Replies 2 ·
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2

Undergrad How to manipulate Ohmic conductors

  • mohau tshekoeng
  • · Replies 2 ·
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2

Undergrad Is this possible? Magnetic tires

  • theboom
  • · Replies 15 ·
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15

Graduate Flux of high charge positive ions, how?

  • Amy
  • · Replies 4 ·
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4

Undergrad Understanding Electromagnetic Waves

  • Ian Baughman
  • · Replies 2 ·
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2

Graduate Does the first maxwell equation apply only....

  • physics user1
  • · Replies 3 ·
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3

Undergrad Calculating the magnetic field strenght at x distance

  • BigShnitsel
  • · Replies 2 ·
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2

Undergrad How does an magnetic domain align?

  • Arceus74
  • · Replies 1 ·
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1

Graduate Why do two like currents attract (frame of reference)?

  • FallenApple
  • · Replies 8 ·
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8

Undergrad Find magnetic field from temporary magnet

  • SirHall
  • · Replies 3 ·
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3

Graduate Calculating Magnetic Field from FFT Amplitude

  • MxwllsPersuasns
  • · Replies 1 ·
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1

High School Why Can a Positive or Negative Charge Attract a Neutral Object?

  • superslow991
  • · Replies 2 ·
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2

Graduate How Do Nested Conducting Loops Interact Electromagnetically?

  • bob012345
  • · Replies 4 ·
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4

Undergrad Permittivity/permeability variation in time

  • calinvass
  • · Replies 16 ·
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16

Undergrad Force from "like charges" with and without movement

  • Don Bones
  • · Replies 8 ·
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8

Graduate Acoustic Absorption Calculation: Ultrasonic Sound in Water

  • Haziq Zaini
  • · Replies 3 ·
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3

Undergrad Autotransformer: Why does primary current go through coil?

  • greypilgrim
  • · Replies 6 ·
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6

Undergrad Electric Potential vs Electric Field?

  • Sergio
  • · Replies 3 ·
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3

Graduate Can electrons move faster than Light?

  • mpolo
  • · Replies 4 ·
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4

Undergrad Why does induction in a loop depend on the contained flux?

  • Xilor
  • · Replies 7 ·
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7

Graduate Making Electromagnetic Waves: Accelerated Charges Explained

  • Biker
  • · Replies 5 ·
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5

Graduate Can a time-varying magnetic field pass a metal sheet?

  • goodphy
  • · Replies 2 ·
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2

Graduate How Is the Red Part of Stratton's Equation Derived from Light Pressure?

  • mertcan
  • · Replies 5 ·
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5

Undergrad Help Solve Voltage Homework Questions for Engineering Student

  • Luke0034
  • · Replies 8 ·
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8

Undergrad Rise in Voltage across a battery

  • Luke0034
  • · Replies 3 ·
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3

Graduate Why Does Zero Divergence of Current Density Imply Zero Charge Density?

  • jonjacson
  • · Replies 8 ·
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8

Undergrad Hall Effect: Electric Field Direction at Equilibrium

  • Evilavatar2
  • · Replies 1 ·
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1

Undergrad What is magnetic force generated by planar spiral coil?

  • starrob
  • · Replies 3 ·
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3

High School Is energy needed to maintain an electromagnetic field?

  • physea
  • · Replies 7 ·
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7

Undergrad Can a capacitor increase voltage beyond initial charge?

  • Blackhawk4560
  • · Replies 3 ·
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3

Graduate Question about capacitance matrix

  • mnb96
  • · Replies 13 ·
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13

Undergrad Can EMF be the same as the current (const)?

  • Gustavs1337
  • · Replies 4 ·
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4

Graduate Bending power - magnet units question

  • JoePhysicsNut
  • · Replies 2 ·
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2

Graduate The Mystery of German Concrete-Penetrating Artillery

  • be unique
  • · Replies 3 ·
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3

Undergrad Master Electromagnetism on the GRE with Problem 55 Explained

  • Silviu
  • · Replies 1 ·
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1

Undergrad Is Ferromagnetism the Key to Understanding Lenz' Law and Magnetic Flux Effects?

  • Fiona Rozario
  • · Replies 15 ·
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15

Graduate Solenoid (single or multi turn) and forces

  • 1Keenan
  • · Replies 5 ·
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5

Graduate New Explanation to How Newton's Third Law is Satisfied in Magnetism

  • Mike Xander
  • · Replies 3 ·
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3

High School Elementary question on Electric flux units

  • jonjacson
  • · Replies 8 ·
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8

Graduate Why an electron at rest cannot emit a photon?

  • Docdan6
  • · Replies 5 ·
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5

Undergrad Does the magnetic field produced by a magnet act on itself?

  • Poopypoop123
  • · Replies 4 ·
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4

Undergrad Why's Potential Difference Different in Series Capacitors?

  • taco01
  • · Replies 3 ·
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3

Graduate Electromagnetic Field in Empty Space

  • Arman777
  • · Replies 10 ·
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10

Graduate Magnetic forces within a closed ferrous core

  • Dorian Black
  • · Replies 1 ·
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1

Undergrad Difference Electric Field Strength Point Charges vs. Plates

  • Merlion
  • · Replies 3 ·
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3

Graduate Do photons carry magnetic force?

  • jnorman
  • · Replies 7 ·
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7

Undergrad Why electric field between two plates ##\frac {σ} {ε_0}## ?

  • Arman777
  • · Replies 8 ·
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8

Graduate Photoelectric effect and zero time delay

  • Asad Raza
  • · Replies 4 ·
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4

Graduate Transformer equation: Using Faraday's law "the wrong way"?

  • greypilgrim
  • · Replies 10 ·
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10

Graduate Identities of fields in Maxwell's equations

  • goodphy
  • · Replies 4 ·
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4

Graduate Moving charges and varying magnetic fields

  • Samson4
  • · Replies 9 ·
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9

Graduate B Field of Large Ring Magnet Calculation

  • jok
  • · Replies 3 ·
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3

Graduate Some confusion of Faraday's law of induction.

  • goodphy
  • · Replies 5 ·
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5

Graduate The Repulsive Interaction between 2 electrons

  • Karim Habashy
  • · Replies 16 ·
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16

Graduate Voltage derivation for charged particles

  • Logical Dog
  • · Replies 23 ·
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23

Graduate Induced surface charge density

  • Silviu
  • · Replies 4 ·
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4

High School Charging a metal plate/piece of metal with capacitor

  • vhb mo
  • · Replies 13 ·
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13

Undergrad Dimensional Analysis Poisson Equation

  • aaaa202
  • · Replies 1 ·
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1

Undergrad How does Faraday's motor cause the wire to circularly move?

  • Coolamebe
  • · Replies 4 ·
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4

Graduate A circular current-carrying wire floats in space....

  • rumborak
  • · Replies 2 ·
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2

Undergrad Stationary Field: Why Professor and Books Differ

  • ATY
  • · Replies 1 ·
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1

Undergrad Charging a capacitor with a battery

  • physics user1
  • · Replies 5 ·
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5

Undergrad Books on Covariant formulation of Electrodynamics

  • Joker93
  • · Replies 3 ·
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3

Graduate Faraday's law or Lorenzt force?

  • Tobi
  • · Replies 9 ·
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9

Undergrad How does a magnetic force affect the movement of charges and magnets?

  • Passionate Eng
  • · Replies 5 ·
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5

High School Charging Capacitors: How Does Series Ckt Work?

  • xoxo1001
  • · Replies 3 ·
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3

Undergrad Magnetic flux and how to manipulate it discussion anyone?

  • NMNXX
  • · Replies 10 ·
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10

Undergrad How to Factor Air Resistance into Basketball Trajectory Calculations?

  • gex
  • · Replies 12 ·
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12

Undergrad Free edition of Purcell, Electricity and Magnetism

  • bcrowell
  • · Replies 7 ·
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7

The Why Question (Feynman on magnets)

  • maroubrabeach
  • · Replies 2 ·
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2

Undergrad Forces between two straight conductors

  • LogarithmLuke
  • · Replies 4 ·
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4

High School Induced Magnetism: Determining Magnetic Poles

  • harvey1999
  • · Replies 3 ·
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3

Graduate Classical and quantum interpretations of electromagnetic radiation

  • Glenn G
  • · Replies 6 ·
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6