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Undergrad E field outside a conducting body

Apr 9, 2013 · Replies 28 · Apr 11, 2013

Replies: 28

Views: 5K

High School Copper wire and shove it into the positive terminal

Apr 11, 2013 · Replies 3 · Apr 11, 2013

Replies: 3

Views: 2K

Graduate Classical Electrodynamics: Explaining the Lorentz Gauge Condition

Apr 10, 2013 · Replies 3 · Apr 11, 2013

Replies: 3

Views: 4K

High School Counting Electrons & Protons in an Atom

Apr 9, 2013 · Replies 11 · Apr 11, 2013

Replies: 11

Views: 3K

Graduate Does the concept of dipole moment of charged molecule exist or not?

Apr 4, 2013 · Replies 6 · Apr 10, 2013

Replies: 6

Views: 5K

High School Webpage title: Understanding Series and Parallel Circuits in Circuit Analysis

Apr 8, 2013 · Replies 5 · Apr 9, 2013

Replies: 5

Views: 2K

Undergrad High voltage, where is the power?

Apr 8, 2013 · Replies 16 · Apr 9, 2013

Replies: 16

Views: 3K

High School Capacitors in series and parallel

Apr 8, 2013 · Replies 5 · Apr 9, 2013

Replies: 5

Views: 3K

Undergrad Surface Charge Density - notation used

Apr 5, 2013 · Replies 1 · Apr 9, 2013

Replies: 1

Views: 2K

Undergrad Alternating current and magnetic fields

Mar 17, 2013 · Replies 24 · Apr 9, 2013

Replies: 24

Views: 6K

Undergrad Why do we need to integrate to find electric field?

Mar 24, 2013 · Replies 6 · Apr 9, 2013

Replies: 6

Views: 4K

Undergrad Energy of an electromagnetic wave

Mar 27, 2013 · Replies 5 · Apr 9, 2013

Replies: 5

Views: 2K

Undergrad Will Magnetic Putty Form a Cube or Sphere When Swallowing a Rare Earth Magnet?

Apr 2, 2013 · Replies 1 · Apr 9, 2013

Replies: 1

Views: 2K

Undergrad Force need to break a magnetic lock

Apr 9, 2013 · Replies 2 · Apr 9, 2013

Replies: 2

Views: 7K

Graduate Looking for equation/proof of b field in a solenoid

Apr 8, 2013 · Replies 1 · Apr 8, 2013

Replies: 1

Views: 2K

High School How do electrons move in a circuit

Apr 8, 2013 · Replies 1 · Apr 8, 2013

Replies: 1

Views: 5K

Graduate Griffiths Electrodynamics gradient of charge distribution

Apr 7, 2013 · Replies 6 · Apr 8, 2013

Replies: 6

Views: 5K

Undergrad Understanding Induced Current in Conducting Wires from Changing Magnetic Fields

Aug 25, 2009 · Replies 12 · Apr 8, 2013

Replies: 12

Views: 9K

Graduate Resonant Frequency of Open Ended Pipes with a Barrier Imposed

Apr 7, 2013 · Replies 2 · Apr 8, 2013

Replies: 2

Views: 2K

Undergrad Voltage Difference Equation Terminology

Apr 6, 2013 · Replies 4 · Apr 7, 2013

Replies: 4

Views: 2K

Undergrad A question in the energy of a capacitor

Apr 7, 2013 · Replies 5 · Apr 7, 2013

Replies: 5

Views: 2K

Undergrad Why is the flux through a closed surface zero with no charge inside?

Apr 7, 2013 · Replies 8 · Apr 7, 2013

Replies: 8

Views: 6K

High School Why is voltage the same in a parallel circuit

Apr 7, 2013 · Replies 2 · Apr 7, 2013

Replies: 2

Views: 3K

Undergrad Electric field on the surface of uniformly charged spherical shell

Apr 6, 2013 · Replies 6 · Apr 7, 2013

Replies: 6

Views: 6K

Undergrad Electric Flux: What it is & Why it's Zero on a Cylinder

Apr 7, 2013 · Replies 1 · Apr 7, 2013

Replies: 1

Views: 2K

Graduate What does curl E = const. on Ω say about E on ∂Ω?

Apr 5, 2013 · Replies 1 · Apr 7, 2013

Replies: 1

Views: 2K

Graduate Understanding the Relationship Between r & $\hat{r}$ in a Vector Equation

Apr 7, 2013 · Replies 4 · Apr 7, 2013

Replies: 4

Views: 2K

Undergrad Energy conversion difference in permanent magnet vs. field coil motor

Apr 6, 2013 · Replies 1 · Apr 6, 2013

Replies: 1

Views: 2K

Graduate Why Is a Negative Sign Used in the Electric Potential of a Charged Sphere?

Apr 4, 2013 · Replies 4 · Apr 6, 2013

Replies: 4

Views: 2K

High School Getting high current from AA batteries

Apr 5, 2013 · Replies 9 · Apr 6, 2013

Replies: 9

Views: 5K

Undergrad What Magnetic Field Would be Generated from this Coil Layout (Picture)

Apr 5, 2013 · Replies 3 · Apr 5, 2013

Replies: 3

Views: 2K

High School Difference between W/Q and E/Q in Electricity

Apr 3, 2013 · Replies 23 · Apr 5, 2013

Replies: 23

Views: 21K

Undergrad Question on sampling frequency/low pass filter

Apr 5, 2013 · Replies 1 · Apr 5, 2013

Replies: 1

Views: 4K

High School Net torque, electric dipole confusion

Apr 5, 2013 · Replies 1 · Apr 5, 2013

Replies: 1

Views: 2K

Graduate When can Gauss' theorem be applied?

Apr 4, 2013 · Replies 3 · Apr 5, 2013

Replies: 3

Views: 2K

Undergrad How to find the strength of an electromagnet

Apr 4, 2013 · Replies 2 · Apr 5, 2013

Replies: 2

Views: 3K

Undergrad Why is the EMF Zero in a Uniformly Moving Coil Through a Magnetic Field?

Apr 4, 2013 · Replies 7 · Apr 5, 2013

Replies: 7

Views: 16K

Undergrad Lenz's law and elctromagnetic waves

Apr 4, 2013 · Replies 2 · Apr 4, 2013

Replies: 2

Views: 2K

Graduate Analytical equation for Magnetic Levitation

Apr 4, 2013 · Replies 3 · Apr 4, 2013

Replies: 3

Views: 3K

Undergrad Name of representation of vectors perpendicular to the plane

Apr 4, 2013 · Replies 2 · Apr 4, 2013

Replies: 2

Views: 1K

Graduate Scattering of an unpolarized photon off an electron

Mar 31, 2013 · Replies 8 · Apr 4, 2013

Replies: 8

Views: 3K

Graduate Would a magnetic charge have the same strength as a electric charge?

Apr 3, 2013 · Replies 3 · Apr 4, 2013

Replies: 3

Views: 2K

Undergrad Understanding Voltage in Parallel RC Circuits

Apr 2, 2013 · Replies 4 · Apr 3, 2013

Replies: 4

Views: 2K

Undergrad What Happens When an Uninsulated Wire Coils Around a Metal Object?

Apr 2, 2013 · Replies 18 · Apr 3, 2013

Replies: 18

Views: 3K

Graduate Do I have to re-define electric field strength in Centre of Mass frame

Apr 3, 2013 · Replies 5 · Apr 3, 2013

Replies: 5

Views: 2K

Undergrad Duration of Charging a capacitor

Apr 2, 2013 · Replies 2 · Apr 2, 2013

Replies: 2

Views: 2K

High School Does the electric field make electrons?

Apr 2, 2013 · Replies 3 · Apr 2, 2013

Replies: 3

Views: 2K

Undergrad Surface field vs pull force(attraction force) of multiple magnets?

Mar 29, 2013 · Replies 2 · Apr 2, 2013

Replies: 2

Views: 3K

Undergrad Electric Flux of Concentric Spheres

Apr 2, 2013 · Replies 1 · Apr 2, 2013

Replies: 1

Views: 2K

Undergrad Potential energy and magnetic torque

Mar 31, 2013 · Replies 1 · Apr 2, 2013

Replies: 1

Views: 2K

High School ADR for Middle School Science fair project (Magnetic Refrigeration)

Apr 1, 2013 · Replies 1 · Apr 1, 2013

Replies: 1

Views: 3K

Undergrad How to calculate electric charge with a given electric potential?

Mar 31, 2013 · Replies 6 · Apr 1, 2013

Replies: 6

Views: 2K

Graduate Solving 2nd ODE for RLC circuit

Mar 31, 2013 · Replies 1 · Apr 1, 2013

Replies: 1

Views: 1K

Undergrad Is angular frequency absolute?

Mar 31, 2013 · Replies 3 · Apr 1, 2013

Replies: 3

Views: 1K

Graduate Object detection through magnetic signature [field]?

Apr 1, 2013 · Replies 4 · Apr 1, 2013

Replies: 4

Views: 2K

Undergrad How Can I Improve My Spark Gap Switch for High-Speed Photography?

Mar 19, 2012 · Replies 4 · Mar 31, 2013

Replies: 4

Views: 6K

Undergrad Can Different Same-Voltage Batteries Be Used in Parallel for Discharge Only?

Mar 30, 2013 · Replies 5 · Mar 31, 2013

Replies: 5

Views: 2K

High School How To Determine Series & Parallel Connections With Multiple Batteries

Mar 30, 2013 · Replies 2 · Mar 31, 2013

Replies: 2

Views: 1K

Graduate How do you apply Gauss's Law at an interface with different permittivities?

Mar 30, 2013 · Replies 3 · Mar 31, 2013

Replies: 3

Views: 3K

High School Can a high voltage across a chamber ionize a gas?

Mar 29, 2013 · Replies 15 · Mar 30, 2013

Replies: 15

Views: 4K

Undergrad How are Electromagnetic signals specified?

Mar 30, 2013 · Replies 2 · Mar 30, 2013

Replies: 2

Views: 1K

Undergrad Net charge of a spherical capacitor

Mar 30, 2013 · Replies 1 · Mar 30, 2013

Replies: 1

Views: 2K

Graduate Suppose an electron was kept with an alpha particle at a finite

Mar 25, 2013 · Replies 18 · Mar 30, 2013

Replies: 18

Views: 3K

Undergrad Qualitative meaning of electric potential

Mar 29, 2013 · Replies 6 · Mar 30, 2013

Replies: 6

Views: 4K

Undergrad Verification of electric potential

Mar 30, 2013 · Replies 2 · Mar 30, 2013

Replies: 2

Views: 1K

Undergrad Questions on Capacitors Concepts: Battery Charging, Electric Fields, Work Done

Mar 30, 2013 · Replies 2 · Mar 30, 2013

Replies: 2

Views: 2K

High School Boit's experiment on electrostatics

Mar 29, 2013 · Replies 1 · Mar 30, 2013

Replies: 1

Views: 1K

Undergrad Confusion in electric potential energy

Mar 29, 2013 · Replies 8 · Mar 30, 2013

Replies: 8

Views: 3K

Graduate Levitation using directed electric fields

Mar 27, 2013 · Replies 13 · Mar 29, 2013

Replies: 13

Views: 6K

Graduate Charging Fluid: Questions & Answers

Mar 27, 2013 · Replies 9 · Mar 29, 2013

Replies: 9

Views: 3K

Undergrad Earth's Magnetic Field: Does it Rotate?

Mar 28, 2013 · Replies 3 · Mar 29, 2013

Replies: 3

Views: 2K

Undergrad Maximum possible force between two electrically charged plates?

Mar 26, 2013 · Replies 2 · Mar 29, 2013

Replies: 2

Views: 2K

Undergrad Properties of an electromagnet

Mar 28, 2013 · Replies 1 · Mar 29, 2013

Replies: 1

Views: 2K

Undergrad Understanding Kirchhoff's Rules for Solving Electrical Circuits

Mar 28, 2013 · Replies 3 · Mar 29, 2013

Replies: 3

Views: 2K

Undergrad Electric Potential of a Uniformly Charged Sphere

Mar 25, 2013 · Replies 2 · Mar 29, 2013

Replies: 2

Views: 3K

Graduate Energy flow in presence of electric and magnetic field

Mar 26, 2013 · Replies 12 · Mar 28, 2013

Replies: 12

Views: 4K

Graduate Charge Transfer and Force Dynamics in an Electromagnetic System

Mar 28, 2013 · Replies 1 · Mar 28, 2013

Replies: 1

Views: 2K

High School How Does Voltage Drop Across a Resistor?

Mar 27, 2013 · Replies 3 · Mar 28, 2013

Replies: 3

Views: 2K

Undergrad Does temperature effect how easily something is magnetized?

Mar 27, 2013 · Replies 4 · Mar 27, 2013

Replies: 4

Views: 1K

Undergrad Work to Move parallel capacitor Plates

Mar 27, 2013 · Replies 10 · Mar 27, 2013

Replies: 10

Views: 5K

Undergrad I am very confused about the physical meaning of the concept flux

Mar 26, 2013 · Replies 9 · Mar 26, 2013

Replies: 9

Views: 5K

Graduate Magnetic permeability of air compared to ferrous materials

Mar 23, 2013 · Replies 7 · Mar 26, 2013

Replies: 7

Views: 6K

Undergrad Electrostatics, capacitor question

Mar 26, 2013 · Replies 1 · Mar 26, 2013

Replies: 1

Views: 1K

Undergrad Without prefix:What is the explanation for Kirchhoff's Voltage Rule?

Mar 19, 2013 · Replies 38 · Mar 26, 2013

2

Replies: 38

Views: 6K

Graduate Please explain why one of the integral vanishes

Mar 25, 2013 · Replies 7 · Mar 25, 2013

Replies: 7

Views: 2K

High School What Happens to the Charge on Capacitors After Battery Removal?

Mar 23, 2013 · Replies 20 · Mar 25, 2013

Replies: 20

Views: 5K

Undergrad The slopes of these graphs represent what? (Magnetic Fields)

Mar 23, 2013 · Replies 7 · Mar 25, 2013

Replies: 7

Views: 34K

Undergrad Understanding Charge Density in Conductors: Factors and Influence

Mar 24, 2013 · Replies 1 · Mar 24, 2013

Replies: 1

Views: 2K

Undergrad Simplified form of Voltage Formula

Mar 24, 2013 · Replies 1 · Mar 24, 2013

Replies: 1

Views: 2K

Graduate Why we can say electron emit radiation when it is accelerating?

Mar 23, 2013 · Replies 16 · Mar 24, 2013

Replies: 16

Views: 4K

Graduate Spatial frequency of pixels in an FFT transformed image

Mar 19, 2013 · Replies 13 · Mar 24, 2013

Replies: 13

Views: 18K

Graduate Total Charge on Conducting Hollow Sphere

Mar 24, 2013 · Replies 2 · Mar 24, 2013

Replies: 2

Views: 3K

High School Help Experiment determining the Earth's magnetic field strength

Mar 19, 2013 · Replies 11 · Mar 24, 2013

Replies: 11

Views: 7K

High School Magnetic field value assigned to a magnet meaning

Mar 19, 2013 · Replies 6 · Mar 23, 2013

Replies: 6

Views: 2K

Undergrad Photodiode in parallel with resistor and capacitor

Feb 26, 2013 · Replies 15 · Mar 23, 2013

Replies: 15

Views: 6K

Undergrad Conservation of Energy: Comparison between momentum & magnetic fields

Mar 14, 2013 · Replies 3 · Mar 23, 2013

Replies: 3

Views: 3K

Undergrad How is a moving coil meter converted into an ohmmeter?

Mar 22, 2013 · Replies 1 · Mar 22, 2013

Replies: 1

Views: 2K

Undergrad How to ground EMF shielding/clothing?

Mar 22, 2013 · Replies 9 · Mar 22, 2013

Replies: 9

Views: 6K

Undergrad EM field due to a long wire submitted to an AC current

Mar 22, 2013 · Replies 1 · Mar 22, 2013

Replies: 1

Views: 1K

Undergrad Maximum possible current in a Conductor

Mar 22, 2013 · Replies 2 · Mar 22, 2013

Replies: 2

Views: 2K

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