Question

an electric bulb is rated 60w-220v . calculate the power consumed by four such electric blubs.

Answer 1

hey there ,,,

60w bulb each .

than , 4 bulbs = 4×60 = 240ohm .

now ,

we know that p = vi

and I = v/r = 220×4/ 240 = 3.6 ampere

now.

p = vi = 220 × 3.6 = 806.66 joules

hope it helps !!

☺☺

Answer 2

p = VI so
60=220×I
600/220=I
2.7=I
thenP=?
v=220
I=2.7 then,
p=220×2.7
p=594 w