(a) Explain briefly the Lorentz Force Law in electromagnetism.
(b) Magnetic forces do no work-Explain this statement.
(c) Explain in your own language, the physical meaning of the continuity equation
V.J = P, where the notations have their usual meaning.
(d) Consider a cylindrical wire of radius a carrying a current density given by
J = ks², where s is any distance within the wire from the central axis. Calculate the total
current I in the wire.