Question

How much current will an electric bulb draw from a 200v source if the resistance of filament is 1200?

Answer 1

v=200v
R= 1200ohm
v=ir
I=v/r
=200/1200
=1/6ampere

Answer 2

Answer:

1. R=1200ohm
2. V=220v
3. I=?

V=IR

V/R=I

220/1200=I

11/60=I

therefore,I=0.18A