equation of continuity Maxwell's equations Poynting's theorem

Faraday’s law apply Stoke’s theorem

Gauss's theorem

equation of continuity

place some charges on a conductor. How long does it take for example: place some charges on a conductor. How long does it take for the charges to spread out?

metal has a conductivity Ohm's law

Poisson's equation solution time constant

static field left hand side right hand side

left hand side right hand side

I

Maxwell’s equations

Big Muskie

Relative size

Relative size

Relative size

Integral form of Maxwell’s equations

constitutive relations D = E B = H j = E

Poynting’s theorem

Poynting’s theorem E x H em power that leaves = - (stored em energy) / t - lost em power E x H

Spherical radiation E x H • ds = EH 42  E2 42  constant E  1/

Cylindrical radiation E x H • ds = EH 2r L  E2 2r L  constant E  1/(r)1/2 r L