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High School How can I create a continuous UPS using a 12V 7Ah battery and an adapter?

  • getzme4u
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1

Undergrad Calculating Electron Speed from Ionized Light

  • liquidFuzz
  • · Replies 3 ·
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3

Undergrad Energy in waves (Amplitude and Frequency)

  • DarkDrag0nite
  • · Replies 17 ·
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17

Graduate Would one consider the following to be a monopole, or a dipole?

  • Gravitas
  • · Replies 1 ·
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1

Undergrad Explanation for lorentz force (current in magnetic field)

  • serverxeon
  • · Replies 10 ·
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10

Undergrad Hey asume i have conected up parallel plates but of different areas

  • Godwin Kessy
  • · Replies 7 ·
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7

Undergrad What Force Causes Electron Orbitals?

  • hexhunter
  • · Replies 14 ·
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14

Undergrad Where do electrons go (?) within a covalent bond

  • karen_lorr
  • · Replies 2 ·
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2

High School Hello, a simple question: a circuit with a DC source and a

  • vrc
  • · Replies 4 ·
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4

Graduate Emf induced in a ring rolling in non-uniform magnetic field

  • Jishnu Dey
  • · Replies 2 ·
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2

Graduate Magnetic field of charge moving at constant velocity

  • Shaw1950
  • · Replies 34 ·
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34

Undergrad Electrostatic Potential Concept

  • thebiggerbang
  • · Replies 40 ·
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40

Graduate Measuring Charge Of An Aerosol

  • sfpservices
  • · Replies 1 ·
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1

Graduate Magnetic field of cylindrical magnet

  • sgsawant
  • · Replies 3 ·
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3

Graduate Tesla coils / Toroidal inductor flux

  • elegysix
  • · Replies 5 ·
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5

Undergrad How Data on electromagnetic waves are transmitted ?

  • dailydc
  • · Replies 4 ·
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4

High School How does a current translate into turning a motor?

  • LogicX
  • · Replies 4 ·
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4

Undergrad How Do Magnetic and Gravitational Fields Interact with Matter?

  • cragar
  • · Replies 17 ·
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17

Undergrad Can the Time Constant Explain the Behavior of RL Circuits?

  • Mr. Johnson
  • · Replies 2 ·
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2

Undergrad Alternating current and rectifiers

  • pbeierle
  • · Replies 1 ·
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1

Undergrad Magnetic Moment of a Rare-Earth Magnet?

  • fasc
  • · Replies 1 ·
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1

Graduate Calculate Resonance Frequency of a Molecule

  • Eikou
  • · Replies 1 ·
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1

High School Capacitor charge or discharge.

  • tushar gupta
  • · Replies 2 ·
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2

Undergrad Heat to current conversion efficiency

  • jumpjack
  • · Replies 4 ·
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4

High School How Can You Weaken the Strength of a Standard Magnet?

  • RestlessMind
  • · Replies 40 ·
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Undergrad Net Electric field inside a conductor=0

  • varadgautam
  • · Replies 5 ·
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5

Undergrad Torque vs Current of a DC motor

  • Jazz House
  • · Replies 4 ·
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4

High School Electric Sulfur Balls: Otto von Guericke’s Discovery

  • eudo
  • · Replies 1 ·
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1

High School The distance at which magnet can attract

  • alaindvs
  • · Replies 9 ·
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9

Graduate EM Waves in Conductors: Why Does B Field Lag E Field?

  • cragar
  • · Replies 6 ·
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6

Undergrad Thoughts on Stirling engines as source of electrical power in space

  • Alfred2011
  • · Replies 8 ·
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8

Graduate Would Greater Electricity Affect a Gravitational Field?

  • Randomguy96
  • · Replies 23 ·
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23

Undergrad Photoelectric Work Function and its relation to Conductors

  • rohitchaky
  • · Replies 1 ·
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1

Undergrad Capacitors as energy storage devices

  • SpectraCat
  • · Replies 24 ·
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24

Undergrad Why do High-Voltage devices spark at high altitude?

  • Lunar_Lander
  • · Replies 1 ·
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1

Undergrad Dielectric objects in electric field

  • st_01
  • · Replies 7 ·
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7

Graduate Massless particle sends electron flying?

  • Brainguy
  • · Replies 11 ·
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11

Graduate Earths magnetic field and core

  • lufc88
  • · Replies 8 ·
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8

High School Visualizing Electric Fields: Techniques and Experiments

  • ebypk
  • · Replies 1 ·
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1

High School Making a Magnetic Levitation Train

  • Triangulum
  • · Replies 7 ·
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7

Undergrad Why exactly do electrons emit photons?

  • MegaDeth
  • · Replies 16 ·
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16

Graduate Photons radiated by free electron?

  • scottbekerham
  • · Replies 7 ·
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7

Undergrad Find EMF Induced When Converting 2-Turn Coil to 1-Turn

  • Bcranger 0
  • · Replies 2 ·
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2

Graduate Second Harmonic Generation: Light Intensity & Efficiency

  • brethg
  • · Replies 2 ·
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2

High School The Benefits of Using AC Instead of DC

  • gkangelexa
  • · Replies 3 ·
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3

Undergrad Magnetic field of parallel plates

  • Notsureigetit
  • · Replies 3 ·
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3

Undergrad Viscosity, resistance, and temperature

  • gkangelexa
  • · Replies 1 ·
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1

Undergrad Effects of radiation on Electric Field

  • dhan_louie
  • · Replies 5 ·
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5

Undergrad Can anyone tell me abt magnetic susceptibility of fruits, vegetables,

  • kiran shezadi
  • · Replies 1 ·
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1

Graduate Calculating Potential from Charge Density via Poisson Equation

  • corroded_b
  • · Replies 2 ·
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2

Undergrad Can Cell Phones Communicate Directly Without Towers?

  • treehouse
  • · Replies 10 ·
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10

High School What is energy at infinity in the context of electrical potential energy?

  • canoluk2003
  • · Replies 6 ·
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6

Graduate How to find formula for resonant frequency of a forced oscillator.

  • alimon.cioro
  • · Replies 3 ·
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3

Undergrad Electric arc/plasma resistant gas

  • shardbearer
  • · Replies 2 ·
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2

Undergrad How are magnetic fields created, what is capacitance energy and voltage

  • wosman
  • · Replies 1 ·
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1

Undergrad Calculating Coulomb friction load torque

  • kakarot1905
  • · Replies 1 ·
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1

Undergrad Photoelectric effect and material ionization

  • citra
  • · Replies 1 ·
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1

Undergrad Magnetic force on a charged particle

  • roshan2004
  • · Replies 4 ·
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4

Undergrad Net current in a semiconductor

  • sahil_time
  • · Replies 6 ·
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6

Undergrad Keeping a wheel spinning using as little electrical energy as possible

  • Laguna2
  • · Replies 5 ·
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5

Undergrad Ball thrown with air resistance

  • amiras
  • · Replies 1 ·
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1

Undergrad Induced emf when accelerates in uniform magnetic field

  • gkw
  • · Replies 21 ·
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21

Undergrad If the magnetosphere of Earth disappeared

  • Nikitin
  • · Replies 4 ·
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4

Undergrad Flux boundary condition on a face of a cube

  • svishal03
  • · Replies 4 ·
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4

Undergrad Electromagnetic fields and empty space

  • nouveau_riche
  • · Replies 24 ·
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24

Graduate Faraday's Law with Acceleration

  • KabooHahahein
  • · Replies 3 ·
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3

Graduate Movement of lone electron in a plane-wave electromagnetic field

  • Robin-Whittle
  • · Replies 3 ·
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3

Undergrad Angular Frequency and Resonance Frequency

  • fromthepast
  • · Replies 1 ·
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1

Undergrad Why is a half-wave antenna length considered optimal for efficiency?

  • tmiddlet
  • · Replies 2 ·
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2

Undergrad Temperature vs Resistance Relationship.

  • Davidthefat
  • · Replies 4 ·
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4

High School Seeking the simplest analogy possible please :-)

  • Marcus99
  • · Replies 21 ·
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21

Undergrad Induced Emf: Magnet Passes through a Coil

  • fromthepast
  • · Replies 8 ·
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8

Undergrad How Do You Calculate Magnetic Flux from a Nearby Spark?

  • elegysix
  • · Replies 6 ·
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6

Graduate Can a Cavity Magnetron Be Used in Reverse to Generate Resonant Frequencies?

  • lufc88
  • · Replies 2 ·
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2

Graduate Can Magnetic Induction Be Used to Boost or Weaken Magnets Remotely?

  • dyce
  • · Replies 9 ·
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9

Graduate Where Does the Energy Go in an EM Field When a Charged Particle Stops?

  • gbz
  • · Replies 9 ·
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9

Undergrad What is the correct designation for resistivity and its unit for a copper wire?

  • gsairus
  • · Replies 14 ·
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14

Graduate Classical charged particle's reaction to its own retarded field

  • jjustinn
  • · Replies 41 ·
2
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41

High School Type of waves used in cell phone comm?

  • pgardn
  • · Replies 1 ·
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1

High School Using magnets to transfer power through metal?

  • michaelwoodco
  • · Replies 10 ·
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10

Undergrad Acoustic Levitation: Physics Law & Forces Explained

  • mnb96
  • · Replies 6 ·
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6

Undergrad Effect of air resistance on angle yielding max displacement

  • sskkiilleeff
  • · Replies 2 ·
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2

High School What is charge? i know that it is of two types positive and

  • nouveau_riche
  • · Replies 14 ·
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14

Graduate 1 MV electrode limited by vacuum pair production?

  • johne1618
  • · Replies 7 ·
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7

Undergrad Linking battery packs to change voltages? and how to charge?

  • phillsmit3
  • · Replies 7 ·
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7

Undergrad Electromagnetic Attenuation Conceptual Question

  • Orlando
  • · Replies 3 ·
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3

Undergrad Can Different Electromagnetic Frequencies Create Unique Magnetic Fields?

  • draconis
  • · Replies 3 ·
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3

Undergrad Can diff. EM frequencies create diff. magnetic fields with diff. properties ?

  • draconis
  • · Replies 1 ·
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1

Graduate Energy In B field of infinite line current

  • Onufer
  • · Replies 5 ·
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5

Undergrad Electrical circuits don't flow in a circle?

  • Evil Bunny
  • · Replies 16 ·
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16

High School Where Does Unused Electricity Go?

  • adilsyyed
  • · Replies 5 ·
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5

Undergrad What Can We Learn from a Pendulum in a Magnetic Field?

  • apkrishna1963
  • · Replies 1 ·
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1

Graduate MRI Safety: Question on Potential Burns

  • vabamyyr
  • · Replies 4 ·
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4

Graduate Hollow Spherical Magnet: Construction, Magnetic Field and Interactions Explained

  • Harmony
  • · Replies 14 ·
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14

Graduate Don't understand dispersive medium

  • facenian
  • · Replies 13 ·
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13

Sound from random frequency pulsates through body

  • allenjm27
  • · Replies 1 ·
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1

Undergrad Understanding Point Charges Along a Uniformly Charged Line

  • tripsynth
  • · Replies 2 ·
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2

High School Understanding the Formula r=mv/Bq in Grade 12 Physics

  • mayodt
  • · Replies 5 ·
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5

Undergrad Finding EMF - why we ignore the negative sign in Faraday's law

  • ncstebb
  • · Replies 4 ·
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4

Undergrad Resistance of a Wire Cube: Diagnol Faces

  • hamzanaveed
  • · Replies 3 ·
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3