Electromagnetism Forum

Post thread

Threads

Undergrad EM wave field strength and energy

  • Usaf Moji
  • · Replies 3 ·
Replies
3

Undergrad Is There a Way to Calculate Energy in Magnets Using FEMM Software?

  • lba7
  • · Replies 4 ·
Replies
4

Graduate Is Electromagnetic Radiation Merely a Mental Construct?

  • Holocene
  • · Replies 3 ·
Replies
3

Graduate How is the electromagnetic field different from aether?

  • quantumfireball
  • · Replies 2 ·
Replies
2

High School The experiment that proved electrons to compose current

  • hbweb500
  • · Replies 5 ·
Replies
5

Undergrad Antenna Frequency & Wavelength: Explained

  • enroger
  • · Replies 11 ·
Replies
11

Graduate Virtual Work - Magnetostatics - Feynman?

  • Thomas2054
  • · Replies 4 ·
Replies
4

Graduate This could be the solution to your confusion.

  • dorist84
  • · Replies 3 ·
Replies
3

High School Electromagnetic induction and Lenz's law

  • kthouz
  • · Replies 4 ·
Replies
4

Graduate Fusion or not with Van De Graaff machine and very high voltage

  • stevecheang
  • · Replies 3 ·
Replies
3

High School Can sympathetic vibrations create vocal undertones in acoustic environments?

  • grannymama
  • · Replies 3 ·
Replies
3

Undergrad Field lines and Coulomb Forces

  • Volcano
  • · Replies 9 ·
Replies
9

High School Can Hitting Metal Make it Magnetic?

  • Th3Proj3ct
  • · Replies 6 ·
Replies
6

Graduate How Does Charge Affect Boundary Conditions in an Electric Field?

  • neworder1
  • · Replies 2 ·
Replies
2

Undergrad Capacitor in AC Circuit: Understanding Current Flow and Energy Storage

  • ay2k
  • · Replies 9 ·
Replies
9

Undergrad Question about electromagnet induction in a coill.

  • Energize
  • · Replies 2 ·
Replies
2

Graduate Electromagnetic Wave Propagation

  • burnit
  • · Replies 9 ·
Replies
9

High School RC circuit maximum voltage

  • eyehategod
  • · Replies 1 ·
Replies
1

Graduate Magnetic field produced by a solenoid

  • Nabeshin
  • · Replies 2 ·
Replies
2

High School Capacitance of parallel plates as a function of distance

  • v_pino
  • · Replies 1 ·
Replies
1

Undergrad Testing the Magnetism of a Solenoid & Galvanometer

  • handsomecat
  • · Replies 3 ·
Replies
3

Undergrad Why Does Overshoot Occur in Electronics?

  • likephysics
  • · Replies 1 ·
Replies
1

High School How much power is needed to hold a 500g object stationary against gravity?

  • priesty100
  • · Replies 9 ·
Replies
9

High School Extending the range of electro magnets? Can it be done?

  • Qaiphyx
  • · Replies 8 ·
Replies
8

High School Can someone please explain magnetic pressure to me?

  • Qaiphyx
  • · Replies 2 ·
Replies
2

Undergrad Magnetic lines of force and magnetic flux

  • manjuvenamma
  • · Replies 9 ·
Replies
9

Undergrad Capacitance Experiment: Determining Time Constant and V_0 Value

  • Joza
  • · Replies 10 ·
Replies
10

Undergrad What is the source of electrons in generators and how are they replenished?

  • extant
  • · Replies 6 ·
Replies
6

High School Alternating current versus direct current

  • halfANDhalf
  • · Replies 18 ·
Replies
18

High School Which Circuit Drains Batteries Faster: Series or Parallel?

  • sandiego234
  • · Replies 5 ·
Replies
5

High School Why do resistors in series receive the same current

  • sameeralord
  • · Replies 8 ·
Replies
8

Undergrad Capacitors and breakdown voltages

  • manjuvenamma
  • · Replies 4 ·
Replies
4

High School What are Ampere-turns and Ampere turns per meter?

  • jearls74
  • · Replies 2 ·
Replies
2

Graduate Can someone help me explain these two problems better?

  • motornoob101
  • · Replies 5 ·
Replies
5

Undergrad Is Negative Electrical Potential a Real Concept in Circuits and Batteries?

  • nuby
  • · Replies 9 ·
Replies
9

Undergrad If E field points up, which way does B field point?

  • Usaf Moji
  • · Replies 2 ·
Replies
2

High School Alternating Current vs Direct Current

  • george1
  • · Replies 17 ·
Replies
17

Graduate Upper cutoff frequency for rectangular waveguide

  • CPL.Luke
  • · Replies 1 ·
Replies
1

Undergrad Magnetic field and airplane scenario.

  • Quelsita
  • · Replies 6 ·
Replies
6

High School Parallel Current-Conducting rods

  • Quelsita
  • · Replies 2 ·
Replies
2

Graduate Geomagnetic Propulsion: Feasibility & Detection

  • trickofthehan
  • · Replies 6 ·
Replies
6

Graduate Ferromagnetic effect at smaller/larger grain size

  • slayercantona
  • · Replies 2 ·
Replies
2

Graduate Mass & Electric/Magnetic Field Relationship

  • nuby
  • · Replies 1 ·
Replies
1

High School Why Doesn't Voltage Always Decrease When Charges Move?

  • sameeralord
  • · Replies 11 ·
Replies
11

High School When I see an electrical arc ,what am I really seeing?

  • leftyguitarjo
  • · Replies 4 ·
Replies
4

Graduate Are magnetic fields 'conservative'

  • pardesi
  • · Replies 6 ·
Replies
6

High School Why an electro magnet use energy?

  • abbas13677
  • · Replies 21 ·
Replies
21

Undergrad Shape and speed of electromagnetic waves

  • nuby
  • · Replies 19 ·
Replies
19

Undergrad Does Moving a Magnetic Field Affect a Stationary Charged Particle?

  • rjeannier
  • · Replies 9 ·
Replies
9

Undergrad How Cooulomb's law follows from Gauss' law?

  • skyliner34
  • · Replies 5 ·
Replies
5

High School Can a single conductor be used as capacitor ?

  • FAlonso
  • · Replies 1 ·
Replies
1

Graduate How Does the Second Uniqueness Theorem Determine the Electric Field in a Volume?

  • pardesi
  • · Replies 5 ·
Replies
5

Undergrad Understanding Lenz's Law and Induced Currents

  • MIA6
  • · Replies 4 ·
Replies
4

Undergrad Aerodynamics and wind resistance of racing cars

  • jun9008
  • · Replies 1 ·
Replies
1

Graduate Gauss Law Anomaly: Potential Across a Capacitor

  • rohanprabhu
  • · Replies 4 ·
Replies
4

Graduate Calculating/estimating Eddy currents due to B-field

  • optophysicist
  • · Replies 1 ·
Replies
1

Undergrad Proof of Induction: Induced Voltage in Any Rod or Circuit

  • Kurret
  • · Replies 2 ·
Replies
2

Undergrad What happens when you put inert electrodes @ 220V/50Hz in tap water?

  • Svizac
  • · Replies 6 ·
Replies
6

High School Why is the standard household AC frequency 60hz?

  • nuby
  • · Replies 16 ·
Replies
16

High School Is Induced E.M.F a Force? Understanding Eddy Currents

  • chiakimaron
  • · Replies 3 ·
Replies
3

Graduate What is the Physical Significance of Gauge Transformations in Electromagnetism?

  • bman!!
  • · Replies 5 ·
Replies
5

Undergrad Does a Magnetic Field Do Work on Electrons in a Wire?

  • Phrak
  • · Replies 7 ·
Replies
7

Graduate Question - electron mass & magnetic moment

  • David George
  • · Replies 2 ·
Replies
2

Graduate The E Field Around a Wire with a Constant Current

  • enroger
  • · Replies 4 ·
Replies
4

High School Magnets vibrating near a current?

  • Energize
  • · Replies 1 ·
Replies
1

Graduate Can Magnetic Field Strength Decrease with Distance in Plasmas?

  • 7doughnuts
  • · Replies 2 ·
Replies
2

Undergrad Back EMF (electromagnetic induction)

  • v_pino
  • · Replies 2 ·
Replies
2

Undergrad How do Electrons perform work in circuits?

  • nuby
  • · Replies 32 ·
2
Replies
32

Undergrad What IS a field e.g. magnetic field

  • jagrener
  • · Replies 30 ·
2
Replies
30

Undergrad Magnetics of transformers and induction in metals

  • Sam Yerardi
  • · Replies 3 ·
Replies
3

Undergrad Exploring the Effects of Combining Small Magnets in a Cube or Sphere Shape

  • Energize
  • · Replies 4 ·
Replies
4

Undergrad Charging a capacitor through a high resistance

  • ivory
  • · Replies 7 ·
Replies
7

High School Question concerning magnetic fields

  • jlo4
  • · Replies 3 ·
Replies
3

Undergrad What is the role of velocity in the equation F = qv x B?

  • Feldoh
  • · Replies 13 ·
Replies
13

Graduate Why does the flux rule work in all cases?

  • lugita15
  • · Replies 4 ·
Replies
4

Undergrad Is the Magnetic Field Non-Conservative in Nature?

  • i_island0
  • · Replies 12 ·
Replies
12

Graduate Induced Electric Fields and EMF

  • skwz
  • · Replies 4 ·
Replies
4

High School Electric charges and large bodies

  • kenewbie
  • · Replies 2 ·
Replies
2

High School Static Electricity: Reduce Shock by Holding a Doorknob

  • lisamay44
  • · Replies 1 ·
Replies
1

Graduate Deriving Poynting Vector from EM Waves

  • tmoan
  • · Replies 3 ·
Replies
3

Undergrad Charge Conservation: A+2 & B+7 → A+5 & B+5

  • Ed Quanta
  • · Replies 5 ·
Replies
5

Graduate Question regarding electromagnetic interaction

  • Lory73
  • · Replies 4 ·
Replies
4

Graduate Question on Magnetic polarization

  • arlo
  • · Replies 1 ·
Replies
1

High School Question about resistance in a circuit

  • skwz
  • · Replies 2 ·
Replies
2

Undergrad Why photon with no charge produces force on charges?

  • wudingbin
  • · Replies 7 ·
Replies
7

High School Why do two point charges with one being zero still exhibit a Coulomb force?

  • cherev
  • · Replies 9 ·
Replies
9

Undergrad Moving while lighting, will be induced current in me?

  • Physicsissuef
  • · Replies 22 ·
Replies
22

Undergrad How does a magnetic crane lift a car if the magnetic force doesn't do any work?

  • gills
  • · Replies 6 ·
Replies
6

High School What Causes the Charging Sound of a Capacitor?

  • uq_civediv
  • · Replies 1 ·
Replies
1

Undergrad Amazing Physics Demonstration - Unravelling the Mystery

  • Yoni
  • · Replies 5 ·
Replies
5

High School Which electron travels from - to +?

  • kenewbie
  • · Replies 2 ·
Replies
2

Undergrad What is charge and what are the reality of fields?

  • ahmedhassan72
  • · Replies 16 ·
Replies
16

Graduate Reflux still at the molecular level?

  • GiTS
  • · Replies 3 ·
Replies
3

High School First Leyden Jar - experimenting.

  • window
  • · Replies 1 ·
Replies
1

Graduate Relation between H and B fields, and D and E fields

  • Repetit
  • · Replies 22 ·
Replies
22

Undergrad Why Can Some Electromagnetic Waves Pass Through Materials While Others Cannot?

  • esmeralda4
  • · Replies 12 ·
Replies
12

Undergrad Charges on outer surface only for conductors or all charged bodies?

  • manjuvenamma
  • · Replies 7 ·
Replies
7

High School Coulomb's law universal or not?

  • manjuvenamma
  • · Replies 15 ·
Replies
15

High School Superconductor with no current?

  • Racer77
  • · Replies 1 ·
Replies
1

Graduate Electromagnetism and Feynman diagrams

  • Ray
  • · Replies 1 ·
Replies
1