All Flashcards
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.
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 there is a charge density?
It generates an electric field.
What happens when there is a current (J) and a changing electric field (∂E/∂t)?
A magnetic field is generated.
What happens when a loop of wire is placed in a changing magnetic field?
An electric current is induced in the loop.
What happens when the current in the cylinder is increased at a constant rate?
An induced electric field is generated both inside and outside the cylinder.
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.