Electromagnetism Forum

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Undergrad Internal resistance of cells in parallel

  • abcd8989
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Undergrad Electric Field really constant in a wire?

  • MotoPayton
  • · Replies 1 ·
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1

Undergrad Question: How is electric potential related to work and potential energy?

  • fahad12
  • · Replies 1 ·
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1

High School Identifying a Voltage Divider Circuit: Tips for Quick Recognition

  • kusiobache
  • · Replies 7 ·
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7

Graduate High voltage supercapacitor is possible?

  • Stanley514
  • · Replies 8 ·
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8

High School Will an induction cooker work in reverse if a hot pan is place on the coil?

  • matt6770
  • · Replies 2 ·
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2

Undergrad How potential energy of electric dipole perpendicular to electric field is zero

  • Sumedh
  • · Replies 6 ·
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6

Undergrad About the experiment to find the reactance of inductor

  • lindacheung66
  • · Replies 3 ·
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3

High School Are Protons & Electrons Just Electrical Charge?

  • vincentfromya
  • · Replies 4 ·
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4

Graduate Electromagnetic vs Kinetic Energy

  • easyrider
  • · Replies 6 ·
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6

Graduate Can the Magnetoelectric Effect Propel Objects?

  • treehouse
  • · Replies 1 ·
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Graduate Why does Photoionization cross section reduce with frequency?

  • bushnoh
  • · Replies 1 ·
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Undergrad An Introduction to Magnetic Attraction?

  • JDoolin
  • · Replies 6 ·
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6

Graduate Differentiating between shear and longitudinal acoustic waves in a solid

  • 1jason.whatfo
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Undergrad Does Increasing Distance Between Point Charges Really Increase Voltage?

  • DocZaius
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2

Graduate Magnetic spin and a magnetic field

  • uvicchem
  • · Replies 1 ·
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1

High School What part of the electromagnetic spectrum is not considered as light?

  • Marketo
  • · Replies 9 ·
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9

Undergrad Does charges remain in an extension cord when unplugged?

  • serverxeon
  • · Replies 19 ·
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19

Undergrad Magnetic Forces in Vacuum: FAQs

  • mzntr
  • · Replies 5 ·
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5

Undergrad About the reactance of capacitor

  • lindacheung66
  • · Replies 3 ·
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3

Undergrad Electric fields, Superposition, and Interneing Matter

  • johns120
  • · Replies 1 ·
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1

Graduate Why do accelerated charges emits a photon?

  • Fisix
  • · Replies 32 ·
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32

High School Question about electric potential energy?

  • fahad12
  • · Replies 5 ·
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5

High School Does accelerating electrons give a higher voltage

  • microfracture
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2

Undergrad Understanding the Electric Field of a Hemispherical Capacitor

  • cragar
  • · Replies 3 ·
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3

Graduate How Do We Derive the Transmission Line Equations Using Differential Methods?

  • yayscience
  • · Replies 1 ·
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1

High School Measuring Electrical Potential and Electrical Fields without a computer

  • piareround
  • · Replies 5 ·
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5

Graduate Transmission Line Impedance Matching

  • phrygian
  • · Replies 4 ·
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4

Undergrad Why is there never any electric field in a hollow conductor?

  • animboy
  • · Replies 2 ·
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2

Graduate Magnetic Induction: EMF Function of Time

  • xenolalia
  • · Replies 8 ·
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8

Undergrad Electric PE of a system of point charges

  • eurekameh
  • · Replies 2 ·
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2

Undergrad What is the average magnetic dipole moment?

  • c.adhityaa
  • · Replies 4 ·
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4

High School Have i got this correct about electrical generators?

  • mrplattypus
  • · Replies 4 ·
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4

Undergrad Possible to modify a magnet to be more beamlike

  • stalnakerz
  • · Replies 8 ·
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8

High School Magnetic force on a current carrying wire

  • pantheid
  • · Replies 2 ·
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2

Graduate Is the Magnetic Force Really Doing No Work?

  • quantum123
  • · Replies 73 ·
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Undergrad What is space charge limit current

  • apunisheriiii
  • · Replies 4 ·
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4

Undergrad How to determine heat from resistance?

  • Thundagere
  • · Replies 1 ·
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1

High School How to build a Large electromagnet?

  • cb767
  • · Replies 14 ·
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14

Undergrad Science experiment- light and magnetic fields

  • Mackanator
  • · Replies 6 ·
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6

Undergrad Understanding Electromagnetic Wave Propagation

  • scientifico
  • · Replies 2 ·
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2

Undergrad 1) If we charge a stacked capacitor like the one in the picture and

  • pmmphrkq
  • · Replies 3 ·
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Graduate Ferromagnetism, what's happening in cylindrical magnets?

  • soljiang
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1

Undergrad How to calculate how long a battery will last

  • bobjenkins777
  • · Replies 5 ·
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5

Graduate Number of photon in the electromagnetic wave

  • jackychenp
  • · Replies 5 ·
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Graduate Understanding the Nature of the Electromagnetic Field: One or Many?

  • csmcmillion
  • · Replies 2 ·
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2

Graduate Does a straight non-time-dependent E field create a circular B field?

  • zheng89120
  • · Replies 4 ·
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4

Undergrad Can capacitors be viewed as non-ohmic resistors?

  • DrClapeyron
  • · Replies 5 ·
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5

Undergrad Force on current in magnetic field

  • KOSS
  • · Replies 20 ·
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20

Undergrad Thermostatic applied on electronic chip

  • schnuber
  • · Replies 2 ·
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2

High School Does Magnetism Require Electricity?

  • dad3
  • · Replies 4 ·
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4

Undergrad Distance travelled by an electromagnetic wave

  • flyerpower
  • · Replies 6 ·
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6

Graduate Cyclotron Frequency of a Hydrogen Atom in a Field B

  • jackychenp
  • · Replies 1 ·
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Undergrad Electric field between point and infinite plate

  • Erikve
  • · Replies 1 ·
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1

Graduate How does c pop out of Maxwell's equations

  • YummyFur
  • · Replies 8 ·
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8

Undergrad Inrush Current and back EMF spikes

  • Jdo300
  • · Replies 7 ·
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Graduate E field difference between planar conductor and infinte sheet

  • Curtis15
  • · Replies 7 ·
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Graduate Energy possessed by Electric Field

  • IEVaibhov
  • · Replies 2 ·
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2

Undergrad A simple hands on hypotesis / thought experiment / question /

  • rytmenpinne
  • · Replies 2 ·
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High School What Makes a Current of 0.1 to 0.2 Volts Unique?

  • moreza
  • · Replies 5 ·
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5

High School Why does grounding protect you from electricity?

  • gsingh2011
  • · Replies 12 ·
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12

Undergrad Harnessing Energy with Piezoelectric Flooring: Materials and Setup Guide

  • Wreak_Peace
  • · Replies 33 ·
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Undergrad How do hydroelectric dams generate power?

  • zzinfinity
  • · Replies 31 ·
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Undergrad Electric charge build up and dispersion through mediums?

  • Ntstanch
  • · Replies 1 ·
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Graduate Effect of Earth's B field on an e/m experiment

  • omicgavp
  • · Replies 4 ·
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4

Graduate The magnet and conductor problem.

  • spaghetti3451
  • · Replies 4 ·
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Undergrad Creative ideas for electrostatics demos/labs

  • MuonMinus
  • · Replies 1 ·
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1

Undergrad Why Does a Charged Particle Inside a Neutral Shell Experience No Force?

  • eurekameh
  • · Replies 3 ·
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3

Graduate If I'm thinking about this correctly, the voltage difference in a

  • Curl
  • · Replies 11 ·
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11

Graduate Intra-atomic gravity causes magnetism?

  • treehouse
  • · Replies 10 ·
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10

Undergrad Ohm's Law and its implications

  • spaghetti3451
  • · Replies 3 ·
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3

Undergrad Hallow I found it very difficult to understand why the calculation

  • Godwin Kessy
  • · Replies 4 ·
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4

Graduate Why eletric charge in Dimensional Analysis and not eletric current?

  • ksio.amaral89
  • · Replies 1 ·
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1

High School Can Current Flow in Opposite Directions in a Circuit?

  • kusiobache
  • · Replies 10 ·
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10

High School What property of molecule structure can be a conductor - electricity?

  • oem7110
  • · Replies 11 ·
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11

Graduate Questions regarding sputtering machines, their magnetrons, and etch process

  • Mike_In_Plano
  • · Replies 2 ·
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2

Graduate Diamagnetic Materials: Magnetic Repulsion or Torque?

  • carmatic
  • · Replies 2 ·
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2

Undergrad Gauss' Law for finding E between metal plates

  • collectedsoul
  • · Replies 7 ·
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7

Graduate Cancel secondary flux (reaction) from transformer

  • lba
  • · Replies 3 ·
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3

High School A little philosophical electric discussion

  • tempneff
  • · Replies 3 ·
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3

Undergrad How Do You Calculate Air Resistance in a Simulation?

  • Crack3n
  • · Replies 3 ·
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3

Undergrad Derivation of electric potential due to point charge

  • Sumedh
  • · Replies 10 ·
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10

Graduate Hertzian Dipole and finding its orientation

  • confusedalot
  • · Replies 1 ·
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1

Undergrad Does a current instantaneously disappear?

  • perplexabot
  • · Replies 3 ·
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3

Undergrad Force on a ferromagnetic object

  • mahela007
  • · Replies 4 ·
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4

Undergrad Force Exerted on Ferromagnetic Object by Permanent Magnet

  • korneld
  • · Replies 3 ·
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3

High School Why are electromagnetic waves transverse waves? Is this answer ok?

  • Spinnor
  • · Replies 4 ·
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4

Graduate Sketch electric field of beamed antenna.

  • Spinnor
  • · Replies 2 ·
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2

Undergrad What actually is natural frequency?

  • kapil phyreak
  • · Replies 1 ·
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1

Undergrad Can you clarify this step (charge density and integrals).

  • DannyPhysika
  • · Replies 2 ·
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2

Undergrad Galvanometer, voltage drop readings

  • mejo.gejo
  • · Replies 5 ·
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5

Undergrad Electromagnetic waves question

  • Misr
  • · Replies 12 ·
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12

Undergrad Magnitude of current in photoelelctric effect

  • ENgez
  • · Replies 5 ·
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5

Graduate Does the presence of a charge change the amount of energy stored in a capacitor?

  • johne1618
  • · Replies 1 ·
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Graduate What if photons had an electric charge?

  • jewbinson
  • · Replies 5 ·
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5

Undergrad What Resistor is Needed to Lower Voltage from 12v to 9 or 10v in a Car?

  • s.dunn
  • · Replies 2 ·
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Graduate Alternate expression for Maxwell's Equations

  • jimhalpert
  • · Replies 1 ·
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Graduate How Does Faraday's Law Explain Zero Work by Magnetic Forces in Motional EMFs?

  • Aubin
  • · Replies 3 ·
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Undergrad Neodymium ball magnet field alignment

  • r3born
  • · Replies 8 ·
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8

Undergrad Frequency and energy of a wave

  • Misr
  • · Replies 5 ·
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