Two identical 60 W, 120 V lamps are accidentally wired in series across 120 V. Approximately what voltage will a DMM read across each lamp, and how will they glow?

Giải thích

Identical lamps in series split the 120 V roughly equally, so each sees about 60 V and both glow dimly at reduced power. They cannot each get the full 120 V in series (a, d), and equal lamps do not divide 120/0 (c). Unequal loads would divide the voltage unequally.