All Flashcards
What happens when there is a changing magnetic field?
It induces an electric field (Faraday's Law).
What happens when an electric charge moves?
It creates a magnetic field.
What happens when a positive charge is present?
Electric field lines emanate from it.
What happens when a negative charge is present?
Electric field lines converge onto it.
What happens when there is a current (J) or a changing electric field (∂E/∂t)?
A magnetic field is generated.
What happens when the magnetic flux changes through a loop of wire?
An electric current is induced in the loop.
What is Electromagnetism?
The force that governs interactions between electrically charged particles.
What is an Electric Field (E)?
A region of space where an electric charge experiences a force.
What is a Magnetic Field (B)?
A region of space where a moving electric charge experiences a force.
What are Electromagnetic Waves?
Oscillating electric and magnetic fields that propagate through space at the speed of light.
What is Coulomb's Law?
Describes the force between two point charges.
What is Gauss's Law?
Relates the electric flux through a closed surface to the enclosed charge.
What is Faraday's Law?
Describes how a changing magnetic field induces an electric field.
What is Ampere's Law?
Relates the magnetic field around a closed loop to the electric current flowing through the loop.
What are Maxwell's Equations?
A set of four equations that unify electricity and magnetism.
What are the key differences between Gauss's Law for Electric Fields and Gauss's Law for Magnetic Fields?
Electric Fields: Divergence proportional to charge density. Magnetic Fields: Divergence is always zero (no monopoles).
Compare and contrast Ampere's Law and Faraday's Law.
Ampere's Law: Relates magnetic field to current. Faraday's Law: Relates changing magnetic field to induced electric field.