Electromagnetism Forum

Post thread

Threads

Undergrad Magnetic field inside a solenoid

  • fisher garry
  • · Replies 7 ·
Replies
7

Graduate High dielectric strength insulator

  • 1Keenan
  • · Replies 3 ·
Replies
3

Undergrad Magnetic field at a point along the solenoid's axis but outside the solenoid

  • turo_loler
  • · Replies 5 ·
Replies
5

Undergrad Calculation for proportional mechanical solenoid Force

  • sk_astroman
  • · Replies 3 ·
Replies
3

High School Frequency of EM Waves from Monitor for Black/White & Color Images

  • EleSuki
  • · Replies 3 ·
Replies
3

Graduate Why do we use covariant formulation in classical electrodynamics?

  • m_prakash02
  • · Replies 6 ·
Replies
6

Undergrad Any free MHD software recomended?

  • turo_loler
  • · Replies 1 ·
Replies
1

Graduate Research on HV to UHV vacuum gauge and controller build (Amateur scale)

  • Ducatidragon916
  • · Replies 1 ·
Replies
1

Graduate Electric field vs coupling between transmission lines

  • Young_Scientist23
  • · Replies 12 ·
Replies
12

Undergrad Hall effect -- is it always applicable?

  • ktmsud
  • · Replies 7 ·
Replies
7

Undergrad Physics domain analysis of Voltage drop in series resistor

  • Muhammad Usman
  • · Replies 7 ·
Replies
7

High School Any limit on how fast a Maglev can go?

  • jaketodd
  • · Replies 33 ·
2
Replies
33

Undergrad Is capacitor energy the electrostatic energy of the whole system?

  • chingel
  • · Replies 9 ·
Replies
9

High School How is surface charge accumulated?

  • gionole
  • · Replies 36 ·
2
Replies
36

Undergrad Power flow outside a wire - how close?

  • Joseph M. Zias
  • · Replies 4 ·
Replies
4

Undergrad Electromagnetic Absorption in the Ocean

  • RobbyQ
  • · Replies 5 ·
Replies
5

Undergrad Parallel Capacitor safety at 10 micron plate spacing

  • Saint Elmo
  • · Replies 32 ·
2
Replies
32

Undergrad DC current flows in a wire when two loops are brought close by?

  • elgen
  • · Replies 14 ·
Replies
14

Undergrad Analog to Biot-Savart for E field

  • scoomer
  • · Replies 5 ·
Replies
5

High School Electric Flux - confused about integrating over a tilted area

  • gionole
  • · Replies 8 ·
Replies
8

Undergrad The vector math of relative motion of wire-loop & bar magnet

  • swampwiz
  • · Replies 1 ·
Replies
1

Undergrad Dimensional analysis in the formula for gyration frequency

  • jonggg
  • · Replies 6 ·
Replies
6

Undergrad Do Electric field lines propagate by themselves away from a charge?

  • gionole
  • · Replies 73 ·
3
Replies
73

Undergrad Why is a Dielectric slab ejected from the capacitor when energized?

  • theconfusedphysicist
  • · Replies 10 ·
Replies
10

High School Why can't we calculate capacitive reactance like u/i?

  • Lotto
  • · Replies 9 ·
Replies
9

Undergrad Stored magnetic energy of solenoid

  • Szecska8
  • · Replies 2 ·
Replies
2

Undergrad Help with Canonical Poisson Brackets & EM Field

  • Matthew_
  • · Replies 2 ·
Replies
2

Graduate Plotting Potential in Plasma Sheath

  • niranama
  • · Replies 2 ·
Replies
2

High School Basic Straight Line Permanent Magnet Accelerator

  • MarcusThatsMe
  • · Replies 3 ·
Replies
3

Undergrad Oscillating charged particles and E.M waves

  • Slimy0233
  • · Replies 9 ·
Replies
9

Undergrad Is total flux linkage λ=dΨ*Ienclosed/I or λ=N*Ψ?

  • ElieMakdissi
  • · Replies 2 ·
Replies
2

Graduate Can an iPhone placed inside a water tank receive wireless LAN signals?

  • EleSuki
  • · Replies 6 ·
Replies
6

Undergrad Angular momentum associated with a current carrying circular wire

  • gurbir_s
  • · Replies 9 ·
Replies
9

Undergrad How Do Helmholtz Coils Affect Electromagnetic Beam Transmission?

  • A6Bnito
  • · Replies 17 ·
Replies
17

High School Magnetic field and generator power output

  • dansmith170
  • · Replies 5 ·
Replies
5

Undergrad Electrostatic force exerted on an electron inside a nucleus

  • mangofan
  • · Replies 19 ·
Replies
19

Undergrad Do valence electrons determine electrical conductivity?

  • milkism
  • · Replies 1 ·
Replies
1

High School How Does the Electric Field of a Moving Charge Appear?

  • Rev. Cheeseman
  • · Replies 29 ·
Replies
29

High School Homopolar motor rotation in Vacuum

  • StoyanNikolov
  • · Replies 18 ·
Replies
18

High School Troubleshooting Battery Internal Resistance Measurements

  • neilparker62
  • · Replies 105 ·
4
Replies
105

High School Seeing both B field lines and E field lines at the same time

  • Rev. Cheeseman
  • · Replies 22 ·
Replies
22

Rubber soled slippers generating static electricity

  • froggy123
  • · Replies 60 ·
3
Replies
60

Undergrad Electric potential and potential difference

  • yucheng
  • · Replies 7 ·
Replies
7

High School Interpreting light as Maxwell's EM wave

  • Rev. Cheeseman
  • · Replies 65 ·
3
Replies
65

Undergrad Magnetism: Same Pole Repulsion & Heteropolar Attraction

  • Hir
  • · Replies 32 ·
2
Replies
32

High School EMF Radiation detected from TV

  • ChrisCOD
  • · Replies 14 ·
Replies
14

Insights How to Measure Internal Resistance of a Battery

  • neilparker62
  • · Replies 12 ·
Replies
12

Undergrad Can Conducting Current Through a Bar Magnet Cause Movement?

  • StoyanNikolov
  • · Replies 16 ·
Replies
16

Undergrad Electric Field Shielding by Conducting Sheets

  • NikhilRG
  • · Replies 3 ·
Replies
3

Undergrad Transmission Line EM Wave vs EM Wave in Free Space

  • LarryS
  • · Replies 18 ·
Replies
18

Undergrad The Mystery of Magnet Rotations: An Unanswered Question

  • Hir
  • · Replies 19 ·
Replies
19

Undergrad Faraday's Nested Sphere Experiment

  • BlackMelon
  • · Replies 3 ·
Replies
3

Undergrad Magnets, Outer space, and Rings

  • James William Hall
  • · Replies 3 ·
Replies
3

Undergrad Calculating Fluke: Subtract A or R?

  • Edwardy
  • · Replies 1 ·
Replies
1

Undergrad Build an Efficient Electrostatic Generator: Tips, Tricks, and Resources

  • Niki
  • · Replies 10 ·
Replies
10

Undergrad Which does more work: gravitation or electromagnetism?

  • Hir
  • · Replies 4 ·
Replies
4

Undergrad Calculating Magnetic Levitation Strength for a 1kg Object

  • navivanuva
  • · Replies 15 ·
Replies
15

Undergrad Units of q in Electric Field Equation

  • Drakkith
  • · Replies 11 ·
Replies
11

Undergrad Origin of the Earth's magnetic field

  • timmdeeg
  • · Replies 8 ·
Replies
8

Undergrad Surface charge of neutral solids

  • Philip Koeck
  • · Replies 3 ·
Replies
3

Graduate Can the Magnetocaloric effect be used for heating liquids?

  • Jyrioffinland
  • · Replies 1 ·
Replies
1

High School Magnetic field coil ferrous material for loudspeaker

  • arivel
  • · Replies 31 ·
2
Replies
31

Undergrad A math confusion in deriving the curl of magnetic field from Biot-Savart

  • Brian Tsai
  • · Replies 0 ·
Replies
0

Undergrad Proof of Q=CV for arbitrarily shaped capacitors

  • jkfjbw
  • · Replies 53 ·
2
Replies
53

Graduate Radiation Friction: Solving Abraham-Lorentz Eq for Non-Physical Solutions

  • gennryAlbius
  • · Replies 1 ·
Replies
1

High School Magnetic Field & Particle Spin: Does It Matter?

  • synch
  • · Replies 5 ·
Replies
5

Undergrad Question on the Lorentz force: Why is the force not F=q(v×B) = F=qv×qB

  • unplebeian
  • · Replies 8 ·
Replies
8

Graduate Radiation back reaction in classical electrodynamics

  • HomogenousCow
  • · Replies 5 ·
Replies
5

Graduate Macroscopic field - seeking a thorough exposition

  • coquelicot
  • · Replies 12 ·
Replies
12

High School What is the principle of a magnet?

  • tomlib
  • · Replies 14 ·
Replies
14

Undergrad Can a pulse from a laser be treated as a Gaussian?

  • Sciencemaster
  • · Replies 9 ·
Replies
9

Undergrad The Method of Images (Electromagnetism)

  • sinus
  • · Replies 4 ·
Replies
4

Undergrad Why Does Grounding Imply Zero Electric Potential in the Method of Images?

  • sinus
  • · Replies 7 ·
Replies
7

High School Confusing diagram of a rotating coil in a magnetic field

  • Grizzly_1
  • · Replies 4 ·
Replies
4

Undergrad Does the aerial [antenna] not need to be positioned perpendicular?

  • homeworkhelpls
  • · Replies 27 ·
Replies
27

Undergrad Blocking microwave auditory effect / Frey effect?

  • michael93
  • · Replies 2 ·
Replies
2

Undergrad Question about orbital and spin magnetic dipole

  • SR_0301
  • · Replies 2 ·
Replies
2

High School Simple yet effective way to reliably control the DC Motor speed?

  • KedarMhaswade
  • · Replies 3 ·
Replies
3

Undergrad Walter Lewin Demo/Paradox: Electromagnetic Induction Lecture 16

  • mabilde
  • · Replies 196 ·
7
Replies
196

Undergrad 4-Current vector potential transformation under Gauge fixing

  • George444fg
  • · Replies 5 ·
Replies
5

Undergrad Neil deGrasse Tyson on Nikola Tesla and electromagnetic energy

  • cnh1995
  • · Replies 15 ·
Replies
15

Undergrad Planck's Impedance: Exploring the Mystery of a Fictional Measurement System

  • AlexB23
  • · Replies 4 ·
Replies
4

Undergrad Thomson Scattering -- elastic collisions conundrum

  • C-Science
  • · Replies 2 ·
Replies
2

Undergrad Why do brushed DC motors only use commutators, and not slip rings?

  • cairoliu
  • · Replies 5 ·
Replies
5

Undergrad Does Coulomb’s law change at relativistic speeds?

  • Bastion
  • · Replies 17 ·
Replies
17

Undergrad Question regarding how to interpret dipole moment for bound charges

  • Harikesh_33
  • · Replies 1 ·
Replies
1

Undergrad Question on Hall Effect and magnetic force

  • dainceptionman_02
  • · Replies 2 ·
Replies
2

Undergrad A donut electromagnetic core comprises main section + movable section

  • cairoliu
  • · Replies 33 ·
2
Replies
33

Undergrad The implications of symmetry + uniqueness in electromagnetism

  • EE18
  • · Replies 1 ·
Replies
1

Undergrad Are voltage and current waves in transmission lines an artifice?

  • Txema
  • · Replies 6 ·
Replies
6

Undergrad Do equipotential lines fall on the equiprobability contours?

  • Mikheal
  • · Replies 1 ·
Replies
1

Undergrad Meaning of "Static Electricity" and Physical Interpretation

  • Enjolras1789
  • · Replies 20 ·
Replies
20

Undergrad Behaviour of Magnetic Fields Underwater

  • sjr
  • · Replies 2 ·
Replies
2

High School Can a Compass Needle be Magnetized to Any Horizontal Direction?

  • Hornbein
  • · Replies 7 ·
Replies
7

High School Can lasers really cause explosions? Let's use a silly hypothetical to find out!

  • Ravioliman
  • · Replies 12 ·
Replies
12

High School The historical war of currents in Mains Power Distribution: AC vs DC

  • FranzDiCoccio
  • · Replies 7 ·
Replies
7

Undergrad Speed of Electricity in Plate Capacitor & Cable

  • Philip Koeck
  • · Replies 18 ·
Replies
18

Undergrad Electric field in a rotating frame

  • Malamala
  • · Replies 1 ·
Replies
1

Undergrad Electric field inside a conductor

  • APUGYael
  • · Replies 13 ·
Replies
13

Undergrad Asking about something that I read on electromagnetic force

  • hagopbul
  • · Replies 1 ·
Replies
1