A toy motor labelled “6 V DC only” is accidentally connected directly to the 220 V, 50 Hz household mains. Which outcome is most likely?
a) The motor’s commutator will act like a rectifier, so it will run much faster than normal but remain undamaged
b) The motor will not run at all because alternating current cannot flow through a DC motor, so it will stay safe
c) The motor will vibrate violently without steady rotation and will soon be damaged
d) The motor will keep reversing every half-cycle, but its inertia will smooth this out so it continues operating