Electromagnetism Forum

Post thread

Threads

Undergrad Showing that B has no discontinuities at the surface

  • Mike400
  • · Replies 3 ·
Replies
3

Graduate Why does a single sphere have a capacitance?

  • greypilgrim
  • · Replies 9 ·
Replies
9

Graduate Can energy be extracted from a proton beam using a current transformer?

  • BrandonBerchtold
  • · Replies 25 ·
Replies
25

Graduate What will the electric field be at the surface?

  • Mike400
  • · Replies 7 ·
Replies
7

Undergrad Most efficient way to drive an electric car and why?

  • arusse02
  • · Replies 10 ·
Replies
10

Graduate What is the continuous electric dipole distribution?

  • Mike400
  • · Replies 19 ·
Replies
19

Graduate Why Does Kirchhoff's Voltage Law Apply to LR Circuits?

  • Lost1ne
  • · Replies 1 ·
Replies
1

Undergrad The capacitance of an isolated sphere

  • pager48
  • · Replies 23 ·
Replies
23

Undergrad Magnetic force -- does it fall off to zero far away from the source?

  • Yahya Sharif
  • · Replies 7 ·
Replies
7

Undergrad How a square or sawtooth wave can have a certain frequency?

  • MrMuscle
  • · Replies 2 ·
Replies
2

Graduate If Maxwell's equations are linear....

  • Charles Link
  • · Replies 26 ·
Replies
26

Undergrad Electrons cannot sense electrostatic force?

  • thomasj
  • · Replies 10 ·
Replies
10

High School Does an Electron Have Its Own Nucleus?

  • sqljunkey
  • · Replies 4 ·
Replies
4

Undergrad How would you find the magnetic force on a piece of metal by an electromagnet?

  • breadandbacon
  • · Replies 3 ·
Replies
3

Graduate How Does Gauge Symmetry Allow Solutions to the Lorentz Gauge Condition?

  • QuasarBoy543298
  • · Replies 3 ·
Replies
3

Undergrad Difference between polarization and the dielectric constant?

  • epsilonita
  • · Replies 9 ·
Replies
9

High School Capacitor and electrostatic field

  • thomasj
  • · Replies 12 ·
Replies
12

Are Magnetic Field Lines Real? - Comments

  • Ibix
  • · Replies 31 ·
2
Replies
31

Undergrad Linear acceleration by using Magnetic strips

  • Sureshbaliyan
  • · Replies 3 ·
Replies
3

Graduate Investigating magnetic field intensity of eddy currents

  • Orlando
  • · Replies 1 ·
Replies
1

Undergrad About air resistance in horizontal direction

  • amiras
  • · Replies 1 ·
Replies
1

Graduate Understanding Polarization-Dependent Phase Shifts of Radio Waves

  • antrobot
  • · Replies 2 ·
Replies
2

Graduate Thermodynamics: Exothermic & endothermic reaction in counter current flow

  • de85
  • · Replies 1 ·
Replies
1

Graduate What Was Discussed at the 9th IAEA Technical Meeting on Energetic Particles?

  • Astronuc
  • · Replies 1 ·
Replies
1

Undergrad How do magnetic fields interact?

  • dfx
  • · Replies 1 ·
Replies
1

Graduate The constitutive equation of Piezoelectric materials ?

  • ThangMMM
  • · Replies 1 ·
Replies
1

Graduate Extend Magnetic Field Density from magnetic object's surface?

  • Wesleyk89
  • · Replies 3 ·
Replies
3

Graduate Very long solenoid ampere law paradox?

  • reaper929
  • · Replies 1 ·
Replies
1

Undergrad Why can an electron go through PVC insulator

  • thomasj
  • · Replies 5 ·
Replies
5

Graduate Does Ampere's Law Hold for Magnetic Circuits with Non-Symmetric Geometry?

  • TFH
  • · Replies 1 ·
Replies
1

Graduate Static free charge in a time varying infinite uniform magnetic field

  • NavStar
  • · Replies 1 ·
Replies
1

Undergrad Can Fleming's left hand rule be used for induced currents?

  • thebosonbreaker
  • · Replies 8 ·
Replies
8

Undergrad How Can Radio-Frequency Harvesting Transfer Power Wirelessly?

  • olek1991
  • · Replies 1 ·
Replies
1

Graduate Tough tough question: Calculating magnetic Flux in water

  • chassiz
  • · Replies 1 ·
Replies
1

Graduate How Does Fringing Field Capacitance Change with Conductor Shape and Size?

  • Dekar
  • · Replies 1 ·
Replies
1

Graduate The energy conservation issue with parallel charged plates with a hole.

  • Harperchisari
  • · Replies 12 ·
Replies
12

Graduate How does the method of image charges work between two conducting surfaces?

  • dimensionless
  • · Replies 1 ·
Replies
1

Undergrad Analysis of an RL Circuit: Voltage, Current and Time Dependence

  • Mola
  • · Replies 1 ·
Replies
1

Graduate Where is photon located when it is not absorbed by electron?

  • rickyyeungyeung
  • · Replies 1 ·
Replies
1

Graduate The Mystery of Photons Inside Electrons: Where Do They Come From?

  • rickyyeungyeung
  • · Replies 5 ·
Replies
5

Undergrad Is the 'test charge' in electric potential energy defined as immobile?

  • archaic
  • · Replies 1 ·
Replies
1

Undergrad Magnetic Fields from Current Carrying Wires

  • gibberingmouther
  • · Replies 2 ·
Replies
2

High School Cancellation of the electric field from opposite charges

  • Shohel chowdhury
  • · Replies 5 ·
Replies
5

High School Do electromagnetic waves moving upside down change?

  • rickyyeungyeung
  • · Replies 2 ·
Replies
2

Graduate What is Kirchhoff's Current Law

  • Greg Bernhardt
  • · Replies 1 ·
Replies
1

Undergrad Convert solar radiation from Joule per cm square to Watt per meter^2?

  • Atr cheema
  • · Replies 1 ·
Replies
1

Undergrad Electricity: Is it a longitudinal wave?

  • Skrphys
  • · Replies 6 ·
Replies
6

Graduate Arguing about the magnetic force vector

  • JD_PM
  • · Replies 1 ·
Replies
1

Undergrad Magnetic field "lines" confused with magnetic field "vectors"

  • magnetics
  • · Replies 9 ·
Replies
9

I forgot the name of a theory in Magnetism

  • GiacomoPaini
  • · Replies 2 ·
Replies
2

Graduate Trajectory of charged particles in a magnetic field?

  • Adeonaja
  • · Replies 2 ·
Replies
2

Undergrad Effective capacitance of a pair of media

  • Prajwal
  • · Replies 1 ·
Replies
1

Undergrad Creating Electricity: Can Magnets & Capacitors Create More Power?

  • BobbaD
  • · Replies 3 ·
Replies
3

Undergrad Determining The Magnetic Saturation of A Soft Iron Magnetic Core

  • Yrton
  • · Replies 7 ·
Replies
7

Undergrad Question about conservation of angular momentum for charges

  • maeila
  • · Replies 9 ·
Replies
9

Undergrad Why Use Nuclear Charge In Finding Energy Value of Singular Electron?

  • member 659869
  • · Replies 3 ·
Replies
3

Graduate What are the most intense electromagnetic waves in nature?

  • andresB
  • · Replies 18 ·
Replies
18

High School Simple experiment with magnets

  • Adel Makram
  • · Replies 11 ·
Replies
11

Undergrad Understanding Luminosity,Brightness,Intensity,Flux

  • Arman777
  • · Replies 7 ·
Replies
7

Undergrad The direction of magnet field

  • wuwei
  • · Replies 1 ·
Replies
1

Undergrad How long does it take for the Magnetic Field to reach the detector?

  • LitleBang
  • · Replies 11 ·
Replies
11

Undergrad Is Ohmic Resistance Applicable to Diodes?

  • CaptainMarvel1899
  • · Replies 10 ·
Replies
10

High School What Happens When We Apply a 10V Source to a Diode in Reverse Bias?

  • CaptainMarvel1899
  • · Replies 14 ·
Replies
14

High School What is the Relationship Between Electric Field and Force on a Charged Particle?

  • ewimmenauer
  • · Replies 7 ·
Replies
7

Graduate Magnetic field from a thin current-carrying cylinder

  • sombr1o
  • · Replies 2 ·
Replies
2

High School Understanding & Applying Lenz's Law

  • thebosonbreaker
  • · Replies 6 ·
Replies
6

Graduate Semiconductor physics: Voltage below forward voltage

  • CaptainMarvel1899
  • · Replies 4 ·
Replies
4

Graduate High dielectric strength, vacuum compatible glue

  • 1Keenan
  • · Replies 8 ·
Replies
8

Graduate How is the energy of a zero resistance circuit converted to rotational energy?

  • Herbert11
  • · Replies 5 ·
Replies
5

High School Reaction Force of Lorentz Force

  • Wein_Sim
  • · Replies 5 ·
Replies
5

Undergrad Help with negative charges in an electric field.

  • Sarah0001
  • · Replies 2 ·
Replies
2

Undergrad Relationship between coulomb energy and binding energy

  • kaziba stephen
  • · Replies 2 ·
Replies
2

Graduate Detecting Lorentz Force: Experiment with Strong Neodymium Magnet

  • Samson4
  • · Replies 2 ·
Replies
2

Graduate Magnetic saturation and ferrite magnets

  • cmb
  • · Replies 2 ·
Replies
2

Graduate Moving charges in a moving frame of reference

  • olgerm
  • · Replies 66 ·
3
Replies
66

Graduate Request about experiments on the linear-motion Faraday paradox

  • greswd
  • · Replies 81 ·
3
Replies
81

Graduate The average potential inside an electrically neutral solid

  • Philip Koeck
  • · Replies 5 ·
Replies
5

Undergrad In batteries, does stored energy vary with battery voltage?

  • techniker
  • · Replies 11 ·
Replies
11

Graduate Biot Savart Law with Different Magnetic Permeabilities

  • BrandonBerchtold
  • · Replies 1 ·
Replies
1

Undergrad Mass/Charge Ratio of Ions: How Much Difference?

  • StandardBanana
  • · Replies 3 ·
Replies
3

Graduate Would a charged lithium battery combust more energetically?

  • PeterB
  • · Replies 2 ·
Replies
2

Undergrad Acoustic resonance - Absorption vs Transmissibility

  • PSuran
  • · Replies 2 ·
Replies
2

Undergrad Influence of Core Change on Current in Solenoid Loops

  • diegbarrientos
  • · Replies 2 ·
Replies
2

Undergrad What is Current? I know it is a scalar but I found something weird....

  • Austin 30
  • · Replies 20 ·
Replies
20

Graduate Maxwell's calculations on electromagnetism's speed = light speed

  • Bill McKay
  • · Replies 15 ·
Replies
15

Graduate Imperial-Metric Unit conversion for Magnetic Field Gradiometer?

  • Calcifur
  • · Replies 2 ·
Replies
2

Undergrad Does Earth's Magnetic Field Have a Charge and What is Its Strength?

  • mohammed El-Kady
  • · Replies 6 ·
Replies
6

Undergrad Electrical force vs Gravitational force

  • Jimmy87
  • · Replies 6 ·
Replies
6

Undergrad Voltage measurement of a point charge

  • Photo1234
  • · Replies 18 ·
Replies
18

Undergrad Do intensity flickers result from the nature of EM waves?

  • greswd
  • · Replies 6 ·
Replies
6

Undergrad Is frequency increased when pulsed?

  • smiddleton
  • · Replies 3 ·
Replies
3

Undergrad Motor drive a coil in a magnetic field to power itself?

  • noxidINF
  • · Replies 4 ·
Replies
4

Graduate Permanent Magnets Described by Magnetic Surface Currents - Comments

  • Charles Link
  • · Replies 36 ·
2
Replies
36

Graduate Origins of magnetic fields from permanent static magnets versus current

  • magnetics
  • · Replies 24 ·
Replies
24

Graduate Electron Gun diffraction and undeflected spot diameter

  • rashida564
  • · Replies 4 ·
Replies
4

Undergrad How do you calculate the inductance of a metal sphere with electrical contacts?

  • John Shillington
  • · Replies 2 ·
Replies
2

Graduate Magnetization of a Helical coil in a Reservoir of parrafin

  • puya
  • · Replies 7 ·
Replies
7

Undergrad Van Allen Belts: why are they where they are?

  • fog37
  • · Replies 1 ·
Replies
1

Undergrad Calculating magnetic field 4 feet away from 2 magnets

  • Harborseal
  • · Replies 1 ·
Replies
1

Graduate How to treat the "ideal" plate capacitor more rigorously?

  • greypilgrim
  • · Replies 11 ·
Replies
11