Useful constants:


Magnetic force on a moving charge:

Magnetic force on a current segment:

Magnetic torque on a dipole in a field:

Magnetic dipole moment of a current loop:

Potential energy of a dipole in a field:

Energy density associated with field:

BiotSavart law:

Ampere's law:

B from long straight current:

B on axis of circular current:

Faraday's law:

Magnetic Flux:

One definition of inductance:
 
emf induced in an inductor:

Energy stored in inductor:

RC time constant:

LR time constant:

Capacitor charging by emf through resistance:

Inductor energizing by emf through resistance:

Capacitor discharging through resistance:

Inductor deenergizing through resistance:
