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High School Determining what side of a magnet is north and south

  • PancakeSyrup
  • · Replies 9 ·
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9

Graduate Does a charge radiate only when changing direction?

  • alba
  • · Replies 7 ·
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7

Undergrad Dispersion relation of a transmission line - questions

  • Matej Kurtulik
  • · Replies 5 ·
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5

Graduate Energy stored in electric field

  • person_random_normal
  • · Replies 7 ·
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7

Undergrad Difference Between an Electron and a Positron?

  • MullaTheMech
  • · Replies 3 ·
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3

Undergrad Movement of a iron ring inside a toroidal solenoid

  • Miv
  • · Replies 2 ·
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2

High School Dimensions of Electric resistance

  • Shivansh Mathur
  • · Replies 7 ·
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7

Undergrad Electrostatics - System of parallel plates

  • person_random_normal
  • · Replies 10 ·
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10

Undergrad Transformer Flux and Exciting Current

  • Jin0505
  • · Replies 1 ·
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1

Undergrad What's the Difference Between Positive and Negative?

  • teegribb
  • · Replies 35 ·
2
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35

Graduate Determine voltage from a conductor in magnetic field

  • BBruyne
  • · Replies 2 ·
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2

Undergrad Why do we want high Radiation Resistance in an antenna?

  • shedrick94
  • · Replies 2 ·
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2

Undergrad Why do short circuits have zero voltage?

  • Vellyr
  • · Replies 10 ·
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10

Graduate A few questions about charged particles

  • Samson4
  • · Replies 3 ·
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3

High School Can high voltage static electricity cause a shock through a power cord?

  • Salvador
  • · Replies 6 ·
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6

High School I was wondering what would happen with these spinning magnets

  • KidThinkPhysics
  • · Replies 4 ·
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4

Graduate Net magnetization with opposing magnetic fields?

  • PhiowPhi
  • · Replies 2 ·
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2

High School Resistance: Definition & Difference Explained

  • Sho Kano
  • · Replies 57 ·
2
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57

Graduate What is the Poynting "vector" mathematically?

  • greypilgrim
  • · Replies 1 ·
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1

Undergrad Calculation of peak acoustic intensity (in water)

  • ireland01
  • · Replies 1 ·
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1

High School Electricity: plastic on plastic

  • Gabriele Pinna
  • · Replies 2 ·
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2

Undergrad Question about a sheet of charge

  • toesockshoe
  • · Replies 5 ·
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5

Undergrad Understanding the change of flux and it's consequences

  • Pyrus96
  • · Replies 1 ·
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1

Undergrad Energy of Inductors in AC Circuit

  • Ibraheem
  • · Replies 9 ·
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9

Undergrad Magnetic field strenght - confusion here

  • holiwis123
  • · Replies 8 ·
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8

Graduate Superconducting Magnetic Energy Storage device size

  • AniV
  • · Replies 6 ·
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6

High School Charge on van de graaff generator

  • Danyon
  • · Replies 2 ·
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2

Undergrad Finding mobility constant in the context of the Hall effect

  • rcyn12
  • · Replies 1 ·
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1

Undergrad Magnetization (M) / magnetic moment (m) of NdFeB?

  • flofelis
  • · Replies 4 ·
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4

High School Why is Parallel Connection of an Ammeter to a Battery Considered Unsafe?

  • Sho Kano
  • · Replies 19 ·
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19

Undergrad Is decreasing resistance always a valid proof of no resistance increase?

  • chingel
  • · Replies 7 ·
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7

Graduate Electric Charge Interacting with Magnetic Monopole

  • DuckAmuck
  • · Replies 1 ·
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1

High School Semantics Q about electromagnetic spectrum and light

  • sollinton
  • · Replies 4 ·
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4

Graduate Transfer of kinetic energy from particle to electric field

  • drl
  • · Replies 4 ·
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4

Graduate Does an electron beam bending lose energy by photon emission

  • houlahound
  • · Replies 34 ·
2
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34

Undergrad Static Electricity: Why We Get Shocks on Carpet & Door Knobs

  • Biker
  • · Replies 6 ·
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6

Undergrad Why magnetic force is perpendicular to the field?

  • Kyx
  • · Replies 12 ·
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12

Undergrad What creates the magnetic field in an individual atom?

  • Prannu
  • · Replies 8 ·
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8

Please confirm magnetic levitating rotor

  • Salvador
  • · Replies 4 ·
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4

Undergrad A strong field from a wire placed in an exterior B

  • PhiowPhi
  • · Replies 5 ·
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5

Graduate Green function in electrostatics

  • Lior Fa
  • · Replies 3 ·
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3

Undergrad Having trouble conceptualizing capacitors

  • Vellyr
  • · Replies 11 ·
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11

Undergrad Conductors and Insulators question

  • ual8658
  • · Replies 3 ·
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3

Graduate How would the electrons flow in this case?

  • Abdul.119
  • · Replies 8 ·
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8

Graduate A magnetic dipole in a magnetic field

  • barnflakes
  • · Replies 9 ·
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9

Undergrad Conservation of Charge in Series Capacitors.

  • Bigger than smaller
  • · Replies 1 ·
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1

High School Power from two sources, electrically assisted bicycle

  • Matt atkinson
  • · Replies 10 ·
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10

Undergrad Electric field at a point inside of a uniformly charged ball

  • Lushikato
  • · Replies 1 ·
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1

Graduate Maxwell's Electrodynamics: The Unusual and Incomplete Theory by Duhem (1902)

  • carl susumu
  • · Replies 1 ·
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1

Undergrad Why does the magnetic field/flux change in copper conductor?

  • CAH
  • · Replies 3 ·
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3

Graduate Cycloid motion of a charged particle.

  • Samson4
  • · Replies 1 ·
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1

Undergrad Why does back EMF in DC machines deviate from a pure sine wave?

  • Syed Taha ahmed
  • · Replies 7 ·
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7

Undergrad Is "R" always positive? (not a HW problem -- it's a general question)

  • JoeyCentral
  • · Replies 6 ·
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6

Graduate Why does Faraday's law involve a partial vs an ordinary derivative?

  • Nick R
  • · Replies 1 ·
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1

Graduate Looking for Doppler Solution to Maxwell's Equations?

  • tade
  • · Replies 4 ·
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4

Graduate Calculating Force of Attraction Between Electromagnet and Permanent Magnet

  • NTL01
  • · Replies 7 ·
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7

Undergrad Evidence for Inverse Square Law at Extremely Large Distance?

  • Opus_723
  • · Replies 5 ·
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5

Graduate Electric field inside a conductor

  • csdev
  • · Replies 14 ·
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14

Graduate High frequency behaviour of copper

  • debajyoti datta
  • · Replies 5 ·
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5

Undergrad Divergence Theorem and Gauss Law

  • Caglar Yildiz
  • · Replies 5 ·
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5

High School Tips for Building a Magnetic Levitator: A High School Physics Project

  • astro_chara
  • · Replies 1 ·
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1

Undergrad Magnetic field modeling software?

  • amblybiguity
  • · Replies 1 ·
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1

Undergrad Fields, one universal or several (i.e. E)?

  • arupel
  • · Replies 8 ·
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8

Undergrad Confusion with electromagnetism and Faraday's law

  • Physgeek64
  • · Replies 3 ·
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3

Undergrad Overall Electric flux of a rigid body

  • Lushikato
  • · Replies 2 ·
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2

Undergrad Electric potential inside an insulating sphere

  • UMath1
  • · Replies 8 ·
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8

Undergrad Electron Properties: Electric vs Magnetic Fields

  • Mihai Dinu
  • · Replies 17 ·
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17

Undergrad Energy expended during magnetic levitation?

  • Jbunn
  • · Replies 3 ·
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3

High School Is this statement correct with the right reasoning?

  • yeezyseason3
  • · Replies 4 ·
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4

Graduate Passive vibration suppression using piezoelectric elements?

  • pinkcashmere
  • · Replies 1 ·
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1

Graduate 2 microstrip capacitance with dielectric

  • hops1
  • · Replies 1 ·
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1

Undergrad What is Returning Loop of Rogowski Coil?

  • endiewibowo
  • · Replies 9 ·
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9

Undergrad Why Does Back EMF Decrease as Current Derivative Decreases in an LR Circuit?

  • Amr Elsayed
  • · Replies 10 ·
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10

Undergrad Is There a Relationship Between Electron Spin and Proton Spin?

  • anorred
  • · Replies 9 ·
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9

Undergrad Trace of cathode ray in changing magnetic field.

  • Samson4
  • · Replies 5 ·
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5

High School Explaining Resistance Heating in Simple Terms

  • Gajan1234
  • · Replies 3 ·
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3

Graduate Are EM waves reflected by inducing Hertzian dipoles?

  • Kara386
  • · Replies 5 ·
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5

Undergrad How to conduct electricity through water without electrodes?

  • kevin_tee
  • · Replies 7 ·
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7

High School What is the Uncertainty of Human Hearing Frequency?

  • gagzi bear
  • · Replies 8 ·
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8

Graduate [electromagnetics] Lorentz Gauge

  • kidsasd987
  • · Replies 6 ·
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6

Undergrad AC DC Mixed Neutral: Help Solving Circuit Board Problem

  • wonadoomore
  • · Replies 1 ·
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1

Undergrad Is Electric Current a Scalar, Vector, or Constrained Vector?

  • debajyoti datta
  • · Replies 11 ·
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11

Undergrad Electronvolt Unit Numerics: What to Choose?

  • aaaa202
  • · Replies 12 ·
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12

High School How to solve a voltage issue in a 25 kva transformer?

  • Deleon
  • · Replies 2 ·
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2

Undergrad Does the Inverse cube law apply for magnetic repulsion?

  • joknhial
  • · Replies 2 ·
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2

Graduate Need suggestion on an MIT OCW material

  • kamaljit
  • · Replies 5 ·
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5

Graduate Electric flux on non-orientable surfaces

  • Chaos
  • · Replies 19 ·
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19

Undergrad How are electric fields detected?

  • Sturk200
  • · Replies 19 ·
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19

Graduate What is the divergence of 1/r^n for positive integer n in physics?

  • debajyoti datta
  • · Replies 29 ·
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29

Undergrad How does the current carrying capacity depends on thickness

  • Anshul J 2016
  • · Replies 4 ·
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4

Undergrad Conceptual question about capacitor plate size

  • RubinLicht
  • · Replies 5 ·
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5

Graduate Charge density that minimizes total energy

  • aaaa202
  • · Replies 19 ·
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19

Undergrad EM Waves & Photon Explained - Learn Here

  • Karan Punjabi
  • · Replies 15 ·
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15

Undergrad Solve Poisson's Equation for Electrostatic Potential

  • aaaa202
  • · Replies 18 ·
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18

Undergrad Integration to find Electric Field at a point P -- dQ or dq?

  • FerPhys
  • · Replies 2 ·
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2

Undergrad How Do Electric and Magnetic Forces Interact with Charges?

  • kent davidge
  • · Replies 4 ·
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4

Undergrad What is the connection between the skin effect and electromagnetic waves?

  • Anton Alice
  • · Replies 4 ·
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4

Undergrad DC current from an armature and converting AC to DC....

  • Hadron
  • · Replies 6 ·
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6

Graduate Calculating thermal resistance across a metal flange

  • soothsayer
  • · Replies 1 ·
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1

High School Does the non-periodic signals have frequency or not?

  • Geek007
  • · Replies 8 ·
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8