  This paper compares the transient induced current due to the electromagnetic
shock produced by a charged particle impacting a perfectly conducting plate,
with the classical, quasi-static induced current of Ramo and Shockley (RS). We
consider the simple model of a line charge, removed upon striking the plate. We
find that the induced current due to the shock is negligible compared with the
RS current for nonrelativistic impact energies, but is more significant as the
impact energy becomes mildly relativistic. The implications of these findings
are discussed.
