Week 6 Biot-Savart Law, Lorentz Law and Magnetism Flashcards
1
Q
how can magnetism be thought of
A
relativistic correction of electrostatics
2
Q
what 3 things are needed to ‘make’ magnetism
A
Coulombs Law
Invariance of Charge
Special Relativity
3
Q
what is the magnetic force equation
A
F = q(v x B)
4
Q
what is the Lorentz Force law equation
A
F = qE + q(v x B)
5
Q
what are two charge related facts about the magnetic force
A
Magnetic force are due to moving charges
Magnetic force only act on moving charges
6
Q
what is the Biot Savart Law equation
A
B = μ/4π ∫I/r^2 dl
7
Q
what is always true of the magnetic field
A
it never does work
