Chapter 5: Electrostatics and Magnetism Equations

Coulomb's Law

F\=K q₁*q₂/r², magnitude of force between two charges

Electric field equation

E \= F/q \= kQ / r^2

Electric potential energy

U \= kQq/r

Electric potential

V \= U/q

V \= kQ/r

Voltage

V \= Vb - Va \= Wab / q

Electric potential near a dipole

V\=(kqd/r^2)cos(theta)

Dipole moment

p \= qd

Electric field on perpendicular bisector of a dipole

E \= 1/4piE x p/r^3

Torque on a dipole in an electric field

T\= p*E*sin(ϴ)

Magnetic field from a straight wire

B\=uI/2pi*r

Magnetic field from a loop

B \= uI/2r

Magnetic force on a moving point charge

Fb\=qvBsin(theta)

Magnetic force on a current-carrying wire

Fb\=ILBsintheta