posted by ashley --- HELP PLEASEE!!! on .
Several light bulbs, each of resistance 1.5 Ω, are connected in a series across a 120 V source of emf. If the current through the circuit is 2 A, how many light bulbs are there in the circuit?
R=V/I=120/2=60 ohms total.
number bulbs= 60/1.5
That is a lot of bulbs.