5:Electric Charges and Fields
9:Current and Resistance
11:Magnetic Forces and Fields
12:Sources of Magnetic Fields
Magnetic Forces and Fields
Mass spectrometer in special case that both magnetic fields are equal
▭ is the force due to a magnetic field on a moving charge.
▭ For a current element oriented along .
▭ The SI unit for magnetic field is the Tesla: 1T=104 Gauss.
▭ Gyroradius Period
▭ Torque on current loop where is the dipole moment. Stored energy
▭ Drift velocity in crossed electric and magnetic fields
▭ Hall voltage = where the electric field is
▭ Charge-to-mass ratio where the and fields are crossed and when the magnetic field is
Magnetic force: .
=EXB drift velocity
Circular motion (uniform B field): Period=
Hall field =
Lorentz force =