  The force due to electromagnetic induction on a test charge is calculated in
different reference frames. The Faraday-Lenz Law and different formulae for the
fields of a uniformly moving charge are used. The classical Heaviside formula
for the electric field of a moving charge predicts that, for the particular
spatial configuration considered, the inductive force vanishes in the frame in
which the magnet is in motion and the test charge at rest. In contrast,
consistent results, in different frames, are given by the recently derived
formulae of relativistic classical electrodynamics.
