Electromagnetism Forum

Post thread
High School Circuit, One resistor, two paths
  • · Replies 7 ·
Replies
7
Views
8K
High School Electric Circuits: Voltage Distribution in Multiple Resistor Circuits
  • · Replies 6 ·
Replies
6
Views
4K
High School Why there must be time-varying magnet to induce current into conductor?
  • · Replies 2 ·
Replies
2
Views
3K
High School Calculating Voltage over Distance for Grill Igniter Projects
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Magnetic force is a function of position?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Question about Maxwell's Equations
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Understanding Magnetic Shielding - Is This Correct?
  • · Replies 2 ·
Replies
2
Views
3K
High School Why the magnetic field is creating around electrons?
  • · Replies 22 ·
Replies
22
Views
8K
Undergrad Why doesn't direct current exhibit self-induction?
  • · Replies 13 ·
Replies
13
Views
12K
Graduate Mutual Electrostatic Energy Derivation.
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Does a copper plate affect mutual induction between two circular coils?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Capacitor measurement and understanding
  • · Replies 8 ·
Replies
8
Views
13K
High School Identifying Magnetic Rods: Brain-Teaser Challenge
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad The Physics of Dropping a Magnet Through a Copper Tube
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad How can a layman visualize an electric field?
  • · Replies 16 ·
Replies
16
Views
6K
Undergrad Is in the one-way current have selfinduction? and if yes why, if no why?
  • · Replies 21 ·
Replies
21
Views
4K
Undergrad Qquestion on a faraday's induction law problem
  • · Replies 8 ·
Replies
8
Views
2K
High School Why don't attracting charges/planets run into each other?
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Faradays law wattage/voltage question?
  • · Replies 1 ·
Replies
1
Views
2K
High School Why Does Touching a 9 Volt Battery to Your Tongue Create a Jolt?
  • · Replies 5 ·
Replies
5
Views
19K
Undergrad High voltage, low amperage, large amount of power
  • · Replies 17 ·
Replies
17
Views
16K
Undergrad Can a Water Analogy for Capacitors Explain the Role of Dielectrics?
  • · Replies 2 ·
Replies
2
Views
5K
High School Electric Battery: Physics Explanation | How Does it Work?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad The link between electricity and magnetism
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Steady current and logical inconsistencies that Im struggling to resolve
  • · Replies 10 ·
Replies
10
Views
3K
Graduate K-Vector Function of Space in EM Waves: Implications
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Deriving EM Energy: Calculation & Explanation of E-Field Energy Storage
  • · Replies 3 ·
Replies
3
Views
2K
High School Preserving the lifetime of a bulb ?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Magnetic fields of infinite solenoid and infinite current carrying plane
  • · Replies 17 ·
Replies
17
Views
18K
Undergrad How Does EM Wave Penetrate in an Elevator/Lift?
  • · Replies 9 ·
Replies
9
Views
5K
Undergrad Can the Equation DB/dt = -curl E Help Solve Real-Life Problems?
  • · Replies 9 ·
Replies
9
Views
5K
Undergrad Plates in a CRT and how they become charged
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad Electromagnetic induction question
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Magnetic Braking: Examining Relative Motion of Wire and Field
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Decreasing Magnetism of Electromagnet
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Ampere's circuital law on finite length wire
  • · Replies 8 ·
Replies
8
Views
14K
Graduate How does a Faraday cage protect against lightning strikes?
  • · Replies 10 ·
Replies
10
Views
13K
Undergrad Inside a Conductor: Understanding Zero Electric and Magnetic Fields
  • · Replies 4 ·
Replies
4
Views
2K
High School Canceling Magnetic & Electric Fields: An O Level Student's Guide
  • · Replies 4 ·
Replies
4
Views
3K
High School How Do Electrons Flow Through Conductive Wires?
  • · Replies 10 ·
Replies
10
Views
8K
Undergrad What is the origin of magnetic fields?
  • · Replies 10 ·
Replies
10
Views
10K
Undergrad Electricity - detailed explanation ?
  • · Replies 8 ·
Replies
8
Views
7K
Undergrad Electric dipole and Gauss' Law
  • · Replies 9 ·
Replies
9
Views
21K
Undergrad Do we currently obtain useful energy from Gravity?
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Magnetic Field Caused by Relativistic Effect
  • · Replies 8 ·
Replies
8
Views
13K
Undergrad Why ampere's law cannot be applied to certain situations
  • · Replies 9 ·
Replies
9
Views
8K
Graduate Does Gauss's Law Allow for Non-Enclosed Point Charges on Gaussian Surfaces?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Why doesn't the integral form of Faraday's Law work for a rotating copper disk?
  • · Replies 15 ·
Replies
15
Views
6K
High School Could a Magnetic Car Revolutionize Transportation?
  • · Replies 8 ·
Replies
8
Views
7K
Undergrad Lenz's Law and Electromagnetic Induction
  • · Replies 8 ·
Replies
8
Views
33K
High School What Does North Indicate in Magnets?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Exploring the Constant Frequency of EM Waves
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Building a Magnetic Railgun - Questions & Answers
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Measuring Inductance in an LR Circuit with AC
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Soft Iron Core Functions in Inductor, Motor & Generator
  • · Replies 2 ·
Replies
2
Views
39K
Graduate Dielectric material becomes conductive at High Frequency?
  • · Replies 5 ·
Replies
5
Views
7K
Graduate Do Magnetic Fields Exist in All Frames of Reference?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Electric field due to a charged ring off-axis
  • · Replies 1 ·
Replies
1
Views
8K
Graduate Is There a Meissner-Like Effect for Electric Fields?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is a Small Scale Tesla Tower Possible Today?
  • · Replies 5 ·
Replies
5
Views
6K
Undergrad Voltage Readings: Internal Resistance & Measurement
  • · Replies 2 ·
Replies
2
Views
3K
High School Magnetic Mystery: Forces Explained
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Magnetic Bar Question: Freezing to Zero Kelvin
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Magnetism: which reference frame?
  • · Replies 8 ·
Replies
8
Views
3K
High School Ohm's Law vs Ohmmeter: Comparing Resistance Values
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Solve the Electrostatic Paradox: Find Finite Value of E
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad How Can I Build an Effective Magnetic Separator for a Mineral Factory?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Calculate pull force of magnet?
  • · Replies 6 ·
Replies
6
Views
31K
Undergrad How Does Electromagnetic Radiation Work?
  • · Replies 5 ·
Replies
5
Views
3K
High School Oscillations and damping (air resistance)
  • · Replies 2 ·
Replies
2
Views
9K
Undergrad Mutual Inductance: Lenz's Law & Switch Effects
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Electric Potential: V = IR Explained
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Does Quantum Mechanics Suggest Photons Are Electrons and Positrons in a Cycle?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Why Does Induction Cause Repulsion in Electromagnetic Experiments?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad How Can the Electric Field Be Constant in a Parallel Plate Capacitor?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Conserved Charge Inconsistency: Hamiltonian v. Lagrangian
  • · Replies 5 ·
Replies
5
Views
4K
High School Understanding Lenz's Law - Get a Clear Explanation Now
  • · Replies 4 ·
Replies
4
Views
17K
Graduate How fundamental is Faraday's Law?
  • · Replies 3 ·
Replies
3
Views
3K
High School Polarization when associated with electric fields?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Magnetic and Electric Field Curiousity
  • · Replies 6 ·
Replies
6
Views
2K
High School Make a motor with: AA battery, copper wire, magnet
  • · Replies 1 ·
Replies
1
Views
26K
Undergrad Relative permittivity/Permeability
  • · Replies 13 ·
Replies
13
Views
18K
Graduate Maxwell's equations & Conductors
  • · Replies 12 ·
Replies
12
Views
4K
Graduate How Does the Method of Images Solve Poisson's Equation in All of Space?
  • · Replies 3 ·
Replies
3
Views
5K
High School Electricity in Space: Can It Work?
  • · Replies 3 ·
Replies
3
Views
8K
High School Converting mechanical to electrical energy
  • · Replies 2 ·
Replies
2
Views
16K
High School Build Electrodynamic Trap:Camera,Voltage,Distance
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Moving charges and magnetic fields
  • · Replies 3 ·
Replies
3
Views
7K
Undergrad Why is there a negative sign in the formula for inductive voltage?
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Electric charges moving and magnetic field
  • · Replies 6 ·
Replies
6
Views
6K
High School Creating a Solenoid Gun: Overcoming Midway Stoppage
  • · Replies 2 ·
Replies
2
Views
5K
High School Electricity Speed: Light Switch to Bulb
  • · Replies 22 ·
Replies
22
Views
5K
Graduate Particle in constant electic and magnetic field
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Resonant frequency of millimetric objects
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Are E and B Fields Only Significant When Measuring Light's Intensity?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Gauss's Law Problem: General than Coulomb's Law?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Lagrangian density of the EM field
  • · Replies 16 ·
Replies
16
Views
10K
High School Is it posibble to transfer electricity wireless ?
  • · Replies 6 ·
Replies
6
Views
9K
High School Magnets and electromagnet power?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Metal Charge Transfer: Why Thin Sheets Form
  • · Replies 3 ·
Replies
3
Views
2K