  We investigate the effect of the electromagnetic field generated in
relativistic heavy-ion collisions on the dissociation of $\Upsilon$ mesons. The
electromagnetic field is calculated using a simple model which characterizes
the emerging quark-gluon plasma (QGP) by its conductivity only. A numerical
estimate of the field strength experienced by $\Upsilon$ mesons embedded in the
expanding QGP and its consequences on the $\Upsilon$ dissociation is made. The
electromagnetic field effects prove to be negligible compared to the
established strong-interaction suppression mechanisms.
