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How does alternating current transfer energy?
Sep 9, 2012
Replies
8
Views
10K
Magnetic dipole in magnetic field
Sep 9, 2012
Replies
3
Views
2K
Electric Field on two non-parallel plates
Sep 9, 2012
Replies
2
Views
3K
Time reversibility of electromagnetism in Incandescent light bulb
Sep 9, 2012
Replies
4
Views
2K
Magnetism & Photons: Research, Rare Phenomena & Invisibility
Sep 8, 2012
Replies
3
Views
2K
Finding E on the Z Axis: A Differential Approach
Sep 8, 2012
Replies
5
Views
5K
Can a magnet's magnetic field perform work on another magnet?
Sep 8, 2012
6
Replies
269
Views
43K
Visualizing field lines with moving current
Sep 7, 2012
Replies
5
Views
2K
Alignment of Carbon Nanotubes in Electric Fields: How and Why?
Sep 7, 2012
Replies
1
Views
1K
Experimental proof that uniformly accelerated charges radiate
Sep 7, 2012
Replies
26
Views
6K
What is the difference between inductive coupling and magnetic coupling?
Sep 7, 2012
Replies
3
Views
13K
External driving force on blackbox system: frequency response
Sep 5, 2012
Replies
1
Views
2K
Fan Speed and Electricity Consumed
Sep 5, 2012
Replies
4
Views
19K
Getting a current going in a circuit
Sep 5, 2012
Replies
7
Views
2K
Relating Movement of Electrons in Currents to Wire Movement/Energy/Power
Sep 5, 2012
Replies
6
Views
3K
Is Current a vector quantity?
Sep 5, 2012
Replies
1
Views
2K
Calculating magnetic field as a function of magnet size
Sep 4, 2012
Replies
3
Views
4K
Magnetic Field: Electric vs Pure?
Sep 4, 2012
Replies
4
Views
2K
Magnetic field of a circular wave
Sep 4, 2012
Replies
2
Views
2K
Canceling one electromagnetic wave with another for a part of the radius
Sep 4, 2012
Replies
4
Views
3K
How Do Superconductors React to External Electric Fields?
Sep 4, 2012
Replies
1
Views
1K
How Do Antennas Achieve High Efficiency Despite Oscillating Electrons?
Sep 3, 2012
Replies
4
Views
2K
Gauss's law in electrodynamics
Sep 3, 2012
Replies
3
Views
2K
Capacitor - Work done to charge it up
Sep 3, 2012
Replies
4
Views
2K
Question on electromagnetic interactions
Sep 3, 2012
Replies
10
Views
3K
Puzzled about direct current and charge (flux)
Sep 3, 2012
Replies
3
Views
1K
Conducting and Insulating Conductors: why uniform and 'surface' charge distribution?
Sep 3, 2012
Replies
1
Views
2K
Understanding the Flux Rule for Motional EMF?
Sep 3, 2012
Replies
3
Views
3K
Frequency Explained for Toddlers: Visible/Audible Range?
Sep 2, 2012
Replies
1
Views
2K
What is the relationship between resistance and radiation in a capacitor?
Sep 2, 2012
Replies
13
Views
4K
What Happened to Wheeler's Single Electron Idea?
Sep 2, 2012
Replies
26
Views
20K
Emission of EM Wave: Why Does it Happen?
Sep 2, 2012
Replies
5
Views
2K
Can you use magnets to push other magnets unlimited amount of times?
Sep 1, 2012
Replies
10
Views
4K
How do we know gravity is not just a large scaled electromagnetic force?
Aug 31, 2012
Replies
3
Views
3K
Can a magnetic fields/forces do work on a current carrying wire?
Aug 31, 2012
9
Replies
407
Views
65K
Doubt with Ampere and Biot-Savart
Aug 30, 2012
Replies
2
Views
2K
Triboelectric Charging Substance Selection
Aug 30, 2012
Replies
2
Views
2K
Changing magnetic field and a point charge, seems unresolvable
Aug 30, 2012
Replies
34
Views
9K
Electroscope Charge Distribution
Aug 29, 2012
Replies
3
Views
3K
Thinking about magnetic coercive field
Aug 29, 2012
Replies
3
Views
3K
What happens to a permanent magnet inside a electromagnetic toroid?
Aug 28, 2012
Replies
3
Views
4K
Is there a connection between water and magnetism?
Aug 28, 2012
Replies
5
Views
2K
Numerical method for finding charge density on a conductor
Aug 28, 2012
Replies
5
Views
3K
In an electrostatic situation, are all charges really at rest?
Aug 27, 2012
Replies
1
Views
4K
Are Magnetic Poles and Currents Equivalent Theories in Creating Magnetic Fields?
Aug 27, 2012
Replies
1
Views
2K
Thermodynamics and thermoelectrics
Aug 27, 2012
Replies
14
Views
3K
Photoelectric Effect: Why does Current Change?
Aug 27, 2012
Replies
5
Views
3K
Magnetic Levitation energy problem
Aug 27, 2012
Replies
16
Views
6K
Electric field at point inside a parallel plate capacitor
Aug 27, 2012
Replies
11
Views
9K
Static Friction, Kinetic Friction and Rolling Resistance query.
Aug 27, 2012
Replies
11
Views
8K
Derivation of Faraday's Law from the Lorentz Force Law
Aug 27, 2012
Replies
4
Views
15K
Understanding Electric Field Flux: Explained with Physical Interpretation
Aug 27, 2012
Replies
6
Views
4K
Boundary conditions with dielectrics question
Aug 26, 2012
Replies
1
Views
3K
Is there a magnetic field around a moving single charge?
Aug 26, 2012
Replies
4
Views
3K
Help explaining the ion-electron recombination process
Aug 25, 2012
Replies
4
Views
2K
Will string theory explain what electric and magnetic fields really are?
Aug 25, 2012
Replies
5
Views
2K
Charge distribution on a conductor
Aug 24, 2012
Replies
0
Views
3K
Electrical and magnetic fields are spherical right?
Aug 24, 2012
Replies
2
Views
2K
What do Electromagnetic waves actually look like in space?
Aug 24, 2012
Replies
4
Views
5K
Levitation with Permanent magnets
Aug 24, 2012
Replies
28
Views
28K
What Voltages Should Be Used for Focus and Deflection Plates in an Electron Gun?
Aug 24, 2012
Replies
3
Views
3K
Air resistance on bodies in free fall
Aug 24, 2012
Replies
2
Views
2K
How Do Magnets Affect the Polarization of Paperclips?
Aug 23, 2012
Replies
2
Views
3K
Possible webpage title: Understanding Induced Charges on Grounded Conductors
Aug 23, 2012
Replies
7
Views
2K
Why battery’s internal resistance decreases with temperature?
Aug 23, 2012
Replies
4
Views
26K
Can magnets have the same poles?
Aug 23, 2012
Replies
1
Views
2K
Why does current travel at speed of light rather than speed of sound?
Aug 23, 2012
Replies
6
Views
4K
Boundary condition for a charged surface
Aug 21, 2012
Replies
4
Views
2K
Is the Self-Inductance Integral Always Positive in Quasistatic Approximation?
Aug 21, 2012
Replies
11
Views
4K
Electrostatic Potential over all space
Aug 21, 2012
Replies
3
Views
1K
Is it safe for a 15-year-old to build an electron gun with dangerous elements?
Aug 20, 2012
Replies
6
Views
3K
Lumens and photon flux density
Aug 20, 2012
Replies
1
Views
2K
Understanding the Time Evolution of Velocity in a Variable Electric Field
Aug 19, 2012
Replies
10
Views
7K
Multimeter current level when measuring resistance
Aug 19, 2012
Replies
2
Views
2K
Elementary problems concerning electromagnetic spectrum
Aug 19, 2012
Replies
14
Views
4K
HELP Investigating the rate of discharge of water from a hole in a bucket
Aug 19, 2012
Replies
6
Views
5K
Point charge configuration with zero potential energy
Aug 18, 2012
Replies
2
Views
2K
Magnetic Switching: Wider or Narrower?
Aug 18, 2012
Replies
8
Views
2K
Charging a Capacitor: Explained & Questions
Aug 17, 2012
Replies
1
Views
2K
Magnetic motor (contradicts 2nd law of thermodynamic? )
Aug 17, 2012
Replies
3
Views
4K
Can Magnets Repel Each Other When Charged? Find Out Here!
Aug 16, 2012
Replies
2
Views
2K
Is it possible to construct a portable ground using an + charged electret?
Aug 16, 2012
Replies
22
Views
4K
Need Help with Applying the Point Form of Ohm's Law
Aug 16, 2012
Replies
5
Views
9K
How Much Energy Can Pedaling Generate for Rechargeable Batteries?
Aug 16, 2012
Replies
1
Views
2K
Why is the electric field ever defined inside volume charge distributions?
Aug 15, 2012
Replies
9
Views
5K
B Field Confinement for Toroidal Coils Driven by AC Current
Aug 15, 2012
Replies
1
Views
3K
AC Circuits: Voltage Changes and Neutral Becoming Live?
Aug 14, 2012
Replies
7
Views
10K
What is the difference between electric field and magnetic field
Aug 14, 2012
Replies
5
Views
3K
Electric field betwen laterally displaced parallel plates
Aug 13, 2012
Replies
4
Views
3K
How do electrons flow in an electric circuit?
Aug 13, 2012
Replies
4
Views
2K
Restoring the magnetic-flux of a magnet
Aug 13, 2012
Replies
2
Views
2K
Static magnet attached to a fridge
Aug 12, 2012
Replies
2
Views
4K
A Charged metal Sphere [does charge move around]
Aug 12, 2012
Replies
3
Views
3K
The Electric Field Inside an induced Conductor
Aug 12, 2012
Replies
1
Views
1K
Photons coming from atoms, when electron changes levels
Aug 12, 2012
Replies
10
Views
3K
Displacement current between two parallel plates
Aug 11, 2012
Replies
4
Views
4K
Energy in AC-Driven Purely Inductive/Capacitive Circuit
Aug 11, 2012
Replies
3
Views
3K
Faraday's Law vs Kirchoff's Rule in circuit - nonconservative fields
Aug 10, 2012
Replies
2
Views
6K
Finding the energy balance of a hydroelectric power generator
Aug 10, 2012
Replies
2
Views
3K
What's the Difference Between B, H, D and E?
Aug 10, 2012
Replies
18
Views
83K
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