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High School Understanding the Direction of Electric Fields: A Question of Convention?

  • carlitos_30
  • · Replies 12 ·
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12

Undergrad Interpreting the Permittivity of Metals

  • Twigg
  • · Replies 4 ·
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4

Undergrad Attraction between a magnetic field and iron

  • Anthony physics
  • · Replies 1 ·
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1

Graduate Disagreements of preciseness of h in PDG and at Watt Balance

  • exponent137
  • · Replies 10 ·
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10

High School Static electricity and D Trump physics pic

  • houlahound
  • · Replies 1 ·
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1

Graduate Equation of dielectric polarization & net electric field

  • OnAHyperbola
  • · Replies 3 ·
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3

High School What Determines Induced Voltage in a Transformer?

  • Wston
  • · Replies 4 ·
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4

Undergrad Magnetic Force and Frame of Reference

  • UncertaintyAjay
  • · Replies 3 ·
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3

Undergrad Battery & Capacitor: Why No Big Forces?

  • Biker
  • · Replies 9 ·
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9

Graduate Is the current density a vector?

  • umby
  • · Replies 21 ·
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21

Undergrad How electric circuits really work

  • Mr Davis 97
  • · Replies 36 ·
2
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36

Undergrad Force between capacitor plates

  • Prateek Kumar Jain
  • · Replies 2 ·
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2

Undergrad What is Reluctance in a Magnetic Circuit?

  • Drew Drowden
  • · Replies 1 ·
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1

Graduate Beats: frequency of resulting wave vs. beats frequency

  • Soren4
  • · Replies 4 ·
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4

Undergrad What are the charges of quarks and leptons?

  • Behrouz
  • · Replies 4 ·
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4

Graduate Magnetic induction/ goal ref technology

  • FranzDiCoccio
  • · Replies 4 ·
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4

Undergrad Flow Resistance of Connected Tubes

  • emh01
  • · Replies 4 ·
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4

High School Understanding the Relationship Between Power, Voltage, Current, and Resistance

  • Splunge
  • · Replies 13 ·
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13

Undergrad Why does Kirchhoff's voltage law hold?

  • Biker
  • · Replies 28 ·
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28

Undergrad What makes the charge gradients within a cloud?

  • Edison Bias
  • · Replies 37 ·
2
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37

Undergrad Electric, magnetic fields and induced currents

  • Wston
  • · Replies 2 ·
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2

High School How do you magnetize a circular magnet?

  • Part Toon
  • · Replies 90 ·
4
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90

High School Creating an electric field with a battery

  • bhope691
  • · Replies 6 ·
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6

High School Why does heating a magnet make it less magnetized?

  • sams123
  • · Replies 2 ·
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2

High School Recent question on NYS regents exam, is it accurate?

  • superdave
  • · Replies 14 ·
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14

Graduate Does Gravitational Field Flux Cause Gravitational Waves?

  • Saksham Dhull
  • · Replies 2 ·
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2

Undergrad How is the equation for voltage across an inductor derived?

  • CraigH
  • · Replies 6 ·
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6

Undergrad Operational Reality of E field? (Bridgman)

  • Cruikshank
  • · Replies 13 ·
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13

Undergrad Is internal battery "emf" a conservative force?

  • STosh9
  • · Replies 3 ·
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3

Graduate Missmatch in electrostatic force calc. by different methods

  • JerryR
  • · Replies 1 ·
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1

Undergrad Why is Bremstrahlung or K-shell emission necessary in an x-ray machine?

  • AndresPB
  • · Replies 10 ·
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10

Undergrad Field outside of a straight wire

  • strokebow
  • · Replies 12 ·
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12

High School Reasons for Electrostatic interactions

  • Swapnil Das
  • · Replies 1 ·
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1

Graduate What Determines the Direction of Acoustic Radiation Force?

  • SFB
  • · Replies 1 ·
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1

Undergrad Electrostatic Potential: Value at zero distance from charge

  • Prateek Kumar Jain
  • · Replies 3 ·
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3

Undergrad Magnetic Flux Vectors: How Are Flux Scalar?

  • Rabia753
  • · Replies 1 ·
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1

Graduate Can vector fields have gradients, and how are they calculated?

  • wprince007
  • · Replies 2 ·
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2

High School What is Flemming's Left Hand Rule and How Does it Relate to Current Flow?

  • Hannah7h
  • · Replies 7 ·
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7

Undergrad How does charge distribute on connected conductors

  • T. Centa
  • · Replies 11 ·
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11

Undergrad Do Electrons have different mass when in different orbitals?

  • MarSuper
  • · Replies 11 ·
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11

Undergrad What is the equation for electromagnetic wave frequency?

  • pkc111
  • · Replies 2 ·
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2

High School Batteries in Parallel Arrangement

  • Jimmy87
  • · Replies 11 ·
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11

Graduate Non-uniform magnetic fields and magnetic moment

  • Wminus
  • · Replies 3 ·
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3

Undergrad How exactly are high energy EM waves harmful for us?

  • Phys12
  • · Replies 14 ·
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14

Undergrad Meaning & limitations of Volt/Current ratings

  • hoot_owl
  • · Replies 4 ·
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4

Graduate Flux Pinning in a type 2 SC Using an AC Electromagnet

  • AniV
  • · Replies 1 ·
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1

Undergrad Uncovering the Mystery of the Electric Field of a Dipole Antenna

  • Maike
  • · Replies 2 ·
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2

Graduate Is Modern Physics Lacking a Deep Explanation of Charge in Electrons and Protons?

  • Behrouz
  • · Replies 6 ·
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6

Undergrad Understanding the Concept of Capacitor: Q&A

  • Karan Punjabi
  • · Replies 3 ·
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3

Graduate Why does Jackson consider small antennas on page 412?

  • qnach
  • · Replies 7 ·
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7

Graduate Is collsional frequency actually frequency per an electron?

  • goodphy
  • · Replies 3 ·
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3

Undergrad Why do we need electromagnetic waves?

  • kent davidge
  • · Replies 3 ·
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3

Undergrad What is the equation for working out emf frequency

  • pkc111
  • · Replies 2 ·
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2

Graduate Can a strong electric field ionize an atom?

  • Electric to be
  • · Replies 1 ·
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1

Graduate How to confirm unit of electron mobility as m^2/(V*S)?

  • goodphy
  • · Replies 1 ·
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1

Undergrad Why are eddy currents circular?

  • vysakh
  • · Replies 2 ·
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2

High School Distance and material affects on magnetic full strength

  • TonyL
  • · Replies 4 ·
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4

Graduate Electric field within solenoid

  • blintaro
  • · Replies 7 ·
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7

Undergrad Can Rain and Other Weather Effects Generate Electricity?

  • dillon morley
  • · Replies 2 ·
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2

Graduate What is Electrical Field in a Closed surface with no charge

  • Prateek Kumar Jain
  • · Replies 3 ·
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3

High School Question about the math involved in E-field calculations

  • Sho Kano
  • · Replies 14 ·
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14

Graduate Calculating flux density in an air gap

  • escape_velocity
  • · Replies 1 ·
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1

Graduate Does time run slower or faster in a magnetic field?

  • LitleBang
  • · Replies 14 ·
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14

Undergrad Why does Gauss' law hold for any closed surface?

  • Physgeek64
  • · Replies 2 ·
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2

Graduate Electromagnetism static charge and forces

  • The black vegetable
  • · Replies 2 ·
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2

Undergrad How to account for air resistance?

  • jonatron5
  • · Replies 5 ·
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5

Graduate How Do Electric and Magnetic Fields Cause EM Waves to Move?

  • Dexter Neutron
  • · Replies 16 ·
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16

Graduate The Movement of Electricity in a Space Ship

  • DonB
  • · Replies 9 ·
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9

Undergrad How Does the Time Constant Relate to Charging and Discharging in Capacitors?

  • Hannah7h
  • · Replies 9 ·
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9

Undergrad Capacitors -- charging and discharging

  • Hannah7h
  • · Replies 13 ·
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13

Graduate Direction of the induced electric field?

  • Dexter Neutron
  • · Replies 1 ·
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1

High School Ammeter vs Voltmeter: Error Comparison

  • lexylouloo
  • · Replies 2 ·
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2

Graduate How do we formulate the electromagnetic Lagrangian?

  • brad2292
  • · Replies 2 ·
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2

High School Effect of number of coils on current in a generator?

  • Jacob Skowronek
  • · Replies 5 ·
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5

Undergrad Electromagnetic induction question, coils and magnets

  • Hannah7h
  • · Replies 9 ·
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9

Undergrad Discharging capasitors and it's general electrical propertie

  • 1832vin
  • · Replies 3 ·
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3

Undergrad How to convert movemnt/speed to electricity or other E.forms

  • AmishaPanchal
  • · Replies 4 ·
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4

Undergrad Magnetism in Coils: Why PD Changes Direction?

  • Hannah7h
  • · Replies 4 ·
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4

Graduate Maxwell and the speed of light

  • genefalk
  • · Replies 9 ·
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9

Graduate Confusion in Maxwell's derivation of Ampere's Force Law - II

  • faheemahmed6000
  • · Replies 5 ·
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5

Undergrad Potential Difference. across capacitors

  • Aldnoahz
  • · Replies 32 ·
2
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32

Undergrad EM Phenomenon: Magnetism from a Cathode Ray?

  • Chris Frisella
  • · Replies 48 ·
2
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48

Undergrad How to Design and set up a strong electromagnet?

  • ZazendS
  • · Replies 20 ·
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20

Undergrad Confusion about electric potential

  • Inspiron
  • · Replies 5 ·
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5

Undergrad Magnetic moment and current of permanant magnet

  • Dexter Neutron
  • · Replies 29 ·
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29

Graduate Light Momentum Transfer between point charges

  • SSGD
  • · Replies 12 ·
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12

High School Static Electricity: Can You Still Get a Shock Off the Ground?

  • Iamnotarobot120
  • · Replies 4 ·
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4

Undergrad Capacitor Energy Storage - Where Does 1/2 Factor Come In?

  • JFS321
  • · Replies 15 ·
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15

Graduate Current at maximum power - PV cell

  • Imperatore
  • · Replies 8 ·
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8

High School Higher frequency => higher energy

  • LLT71
  • · Replies 3 ·
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3

Undergrad Electrical potential energy question

  • Grahamlf
  • · Replies 12 ·
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12

Undergrad Electric Field Unchanged in Parallel Plate Condenser w/ Varying Distance

  • orgmann
  • · Replies 1 ·
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1

Graduate Remove free electrons from plasma?

  • LW94
  • · Replies 1 ·
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1

High School Why isn't my electromagnet working?

  • KaleLetendre
  • · Replies 14 ·
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14

High School Question about understanding conductors for EM course

  • Sho Kano
  • · Replies 84 ·
3
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84

Undergrad Help with understanding electric potential graphs

  • Hannah7h
  • · Replies 2 ·
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2

Undergrad Calculate the temperature based on Resistance

  • Elvira
  • · Replies 5 ·
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5

Undergrad Moving Magnet Along a Conductor

  • D Rock
  • · Replies 13 ·
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13

High School Magnet Attracts North End of Compass: Meaning

  • j doe
  • · Replies 6 ·
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6

Graduate Total energy of free electron gas

  • RingNebula57
  • · Replies 1 ·
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1