Electromagnetism Forum

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Undergrad Ion Behavior in Electric Field

  • Misha Kuznetsov
  • · Replies 5 ·
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5

Graduate Question about a magnetic field

  • Braindeadidiot
  • · Replies 3 ·
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3

Graduate Derivation of coloumbs law without Gauss's law

  • bhargav_kashi
  • · Replies 4 ·
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4

Undergrad What is the general definition of emf?

  • kelvin490
  • · Replies 1 ·
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1

High School Is the Transformer in My Adapter Damaged? A Question for Physics Assignment

  • Sora no tori
  • · Replies 10 ·
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10

Undergrad Calculating hovering of an electro plane

  • jsa0100
  • · Replies 1 ·
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1

Undergrad Generating Electricity from Gas: Is It Possible?

  • evan manalu
  • · Replies 15 ·
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15

High School Confused about short circuit and open circuit

  • mohamed el teir
  • · Replies 9 ·
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9

Undergrad Is there an electromagnetic transducer to melt ice?

  • itzkovitch
  • · Replies 3 ·
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3

Graduate Do ionic crystals have total electric dipole moment?

  • taishizhiqiu
  • · Replies 18 ·
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18

High School Resistance vs Current: I ∝ m/a^2

  • gracy
  • · Replies 10 ·
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10

Undergrad Why diamagnetic material is not repelled

  • kelvin490
  • · Replies 1 ·
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1

Graduate Intuitive interpretation of some vector-dif-calc identities

  • Sevastjanoff
  • · Replies 2 ·
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2

Graduate Reverse Recovery Current of a diode

  • tonyjk
  • · Replies 3 ·
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3

Undergrad Do Free Electrons Decrease in a Conductor with Applied Voltage?

  • gracy
  • · Replies 14 ·
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14

Undergrad Hydrogen atom stripped of an electron

  • Samson4
  • · Replies 7 ·
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7

Undergrad Can Ampere's law be applied to 3D loop?

  • kelvin490
  • · Replies 12 ·
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12

Undergrad Electromagnet, current vs voltage, same?

  • supak111
  • · Replies 3 ·
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3

High School Help needed with concept of electricity, magnetism and EM

  • swaggaboy112
  • · Replies 8 ·
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8

Undergrad Kirchoff's Loop Rule ∑ΔV=0 question

  • Yorick Chupka
  • · Replies 9 ·
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9

Graduate Electromagnetic Waves through parallel plates

  • Samson4
  • · Replies 8 ·
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8

High School Can hot objects become charged?

  • lonely_nucleus
  • · Replies 4 ·
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4

Undergrad Getting from non-imaginary to imaginary

  • jaydnul
  • · Replies 7 ·
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7

Undergrad Calculating Resistance of Y with X & Variable Resistor

  • CAH
  • · Replies 5 ·
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5

High School "Water circuit" equivalents of basic electric components

  • rumborak
  • · Replies 15 ·
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15

Graduate Maxwell's equations and conservation principles

  • Delta2
  • · Replies 3 ·
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3

Undergrad The Current Load: Why Do Two Diodes in Parallel Not Share It?

  • iScience
  • · Replies 6 ·
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6

Undergrad Power, Resistance, Voltage, Current

  • skepticwulf
  • · Replies 5 ·
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5

Graduate Magnetic Field in plane 90 degrees off Helmholtz coil axis?

  • BrickHowes
  • · Replies 2 ·
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2

Graduate Coloumbs constant's derivation

  • bhargav_kashi
  • · Replies 1 ·
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1

Undergrad Understanding Inductor Behavior in a Changing RL Circuit

  • Slava
  • · Replies 8 ·
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8

Undergrad Thermoelectric (copper and iron at 1000C)

  • evan manalu
  • · Replies 2 ·
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2

Graduate Parasitic capacitance influence on lead voltage

  • Marcis Rancans
  • · Replies 3 ·
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3

Graduate Nerve connection replace with electricity

  • fredreload
  • · Replies 6 ·
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6

Undergrad Voltage on a electrostatic charged sphere

  • abdo799
  • · Replies 3 ·
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3

Graduate Would the reading in voltmeter change?

  • Daniel Han
  • · Replies 9 ·
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9

Undergrad Charging a Capacitor: Puzzling Questions Answered

  • aerograce
  • · Replies 19 ·
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19

Undergrad Trigger for a Zn oxidation reaction in a battery

  • Slava
  • · Replies 9 ·
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9

Undergrad Voltage in RL Circuit Series: Why?

  • Jzhang27143
  • · Replies 3 ·
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3

Undergrad What area does the flux formula refer to?

  • koliko987
  • · Replies 1 ·
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1

Graduate Can You Solve This Infinite Grid of Resistors Problem?

  • excrucio
  • · Replies 6 ·
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6

Graduate Hamiltonian of an electron under EM radiation

  • blue_leaf77
  • · Replies 4 ·
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4

High School Which Battery Configuration Produces a Brighter Bulb?

  • yuganes warman
  • · Replies 5 ·
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5

Graduate Logical/mathematical proof for the identity of electron

  • Vinay080
  • · Replies 3 ·
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3

Undergrad Electromagnetic induction of a wire in a complete circuit

  • Rohan1997
  • · Replies 12 ·
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12

Undergrad Electric Potential and Electric Potential E changes

  • Jmiz
  • · Replies 5 ·
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5

High School Electrons have to move -- why?

  • blackole
  • · Replies 12 ·
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12

Graduate How does an electron decide when to de-excite?

  • quawa99
  • · Replies 7 ·
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7

Undergrad Electrical Conductivity of Copper, Gold And Silver

  • write2diba
  • · Replies 2 ·
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2

Graduate What is the equivalent of Electric P.E. in Magnetism?

  • userunknown
  • · Replies 10 ·
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10

Graduate Why does refractivity not depend on density; Lorentz-Lorenz

  • Soren
  • · Replies 2 ·
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2

Graduate Dropping a magnet through the moon

  • Ghostcrown
  • · Replies 3 ·
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3

Graduate EM wave from electrons V protons

  • houlahound
  • · Replies 7 ·
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7

Undergrad What Am I Missing About Kirchhoff's Law in LC Circuits?

  • Youngwoo Cho
  • · Replies 8 ·
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8

High School Batteries in Series: Understanding Voltage Addition

  • Slava
  • · Replies 1 ·
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1

High School Differences in Repelling Charges

  • Neil Graham
  • · Replies 1 ·
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1

Undergrad Charging of resistor with resistance in parallel

  • AdityaDev
  • · Replies 3 ·
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3

Graduate Understanding Voltage in EM Circuits: A Student's Query

  • pmr
  • · Replies 3 ·
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3

High School Why is the current the same at points A and B in a resistor?

  • skepticwulf
  • · Replies 43 ·
2
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43

Undergrad Why Does the Kinetic Energy of Photoelectrons Rise Up to a Maximum?

  • ryanuser
  • · Replies 4 ·
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4

Graduate If photons have no charge then how

  • houlahound
  • · Replies 14 ·
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14

Undergrad Using magnetic fields to pickup radio freguencys

  • Paul Turner
  • · Replies 3 ·
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3

High School Why do some countries use 110V 60Hz and others use 220V 50Hz for electricity?

  • skepticwulf
  • · Replies 2 ·
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2

Graduate Does a Static Charge and Magnetic Dipole Create Non-Zero Energy Flow?

  • devd
  • · Replies 6 ·
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6

Undergrad Are density and resistivity proportional?

  • Rushikesh Sarda
  • · Replies 5 ·
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5

Undergrad Do back force and back emf come together?

  • 21joanna12
  • · Replies 1 ·
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1

Undergrad Importance of the frequency of AC mains power lines

  • skepticwulf
  • · Replies 8 ·
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8

Graduate How to explain the overdetermination of Maxwell's equations

  • time601
  • · Replies 21 ·
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21

High School Calculating Current Flow in a Series Circuit with Identical Bulbs

  • yuganes warman
  • · Replies 4 ·
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4

High School Magnet strength between 2 magnets

  • vincenttswong
  • · Replies 8 ·
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8

Graduate Does electronegativity affect rate of entropy increase?

  • PWiz
  • · Replies 1 ·
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1

High School Which properties of waves are influenced by the medium?

  • Lexi22
  • · Replies 3 ·
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3

Undergrad Coulomb's Law and Electric Fields

  • student07
  • · Replies 2 ·
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2

Graduate Boundary conditions of electric field?

  • PhysicsKid0123
  • · Replies 1 ·
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1

Undergrad Back emf in a single loop of wire?

  • 21joanna12
  • · Replies 1 ·
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1

Undergrad Current induced by magnet: maximize change in flux wrt time?

  • Battlemage!
  • · Replies 6 ·
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6

Undergrad Magnetic field and electric field induce one another forever

  • Joker93
  • · Replies 7 ·
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7

Undergrad Electromagnet to attract small iron pieces

  • hackhard
  • · Replies 22 ·
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22

High School Electricity. What kind of current should I use?

  • thegreengineer
  • · Replies 14 ·
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14

Undergrad Is Electric Cell Efficiency Always 50% in Closed Circuits?

  • Aceix
  • · Replies 1 ·
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1

Undergrad Electric field on the surface of charged conducting sphere?

  • mohamed el teir
  • · Replies 3 ·
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3

High School Thevenin and norton theorem question

  • rajeshmarndi
  • · Replies 2 ·
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2

High School The Earth Harp is it a possible acoustic instrument?

  • Loran Pittman
  • · Replies 4 ·
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4

Graduate Understanding Skin Depth in DC and AC Fields: Confusion and Clarification

  • goodphy
  • · Replies 2 ·
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2

Undergrad Average drift velocity of electron in conduct

  • kelvin490
  • · Replies 1 ·
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1

Graduate Finding forces/torques on a permanent magnet from a coil

  • refind
  • · Replies 1 ·
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1

Undergrad How are electrons accelerated in electron impact ionization?

  • Misha Kuznetsov
  • · Replies 4 ·
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4

Undergrad How to prove Kirchhoff's loop rule?

  • kelvin490
  • · Replies 1 ·
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1

Undergrad Proton movement in an electric field

  • Voodoo doodler
  • · Replies 6 ·
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6

Graduate Derivation of electromagnetic waves

  • FunkyNoodles
  • · Replies 4 ·
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4

Graduate I'm looking the paper first using the term Michel electrons

  • DylanL
  • · Replies 2 ·
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2

Undergrad How does a magnetic field affect an electrical field

  • Samuelriesterer
  • · Replies 3 ·
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3

Undergrad How did Coulomb charge his spheres to verify Coulomb's law?

  • Samyukta
  • · Replies 5 ·
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5

Undergrad Electric field inside charged conducting sphere?

  • mohamed el teir
  • · Replies 3 ·
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3

Undergrad What does B.dl indicate in Ampere's Law

  • sawer
  • · Replies 6 ·
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6

Graduate How Do Ampere's Law and Faraday's Law Relate to Electromagnetic Waves?

  • jbenson
  • · Replies 7 ·
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7

Graduate Defining Light and Electromagnetism in simple layman's terms

  • Intropersona
  • · Replies 11 ·
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11

Graduate Lorentz transf. of a spherical wave in Euclidean space

  • Rumo
  • · Replies 5 ·
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5

Undergrad What are Electric & Magnetic Fields composed of?

  • Intropersona
  • · Replies 2 ·
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2

Undergrad Why do electromagnetic fields exist where there is no matter

  • Intropersona
  • · Replies 7 ·
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7