Engineering Studio

https://www.youtube.com/watch?v=rs4lJWlWsR0

Amazing Science - What does an Electrical Engineer do? What's it really like to be an engineer or a scientist? What do they really do all day? You're about to find out! Meet the next generation of engineers and s...

Q: Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

A: Since two bulbs are in series they will get equal amount of electrical current but as the supply voltage is constant across the Bulb (P=V^2/R).So the resistance of 40W bulb is greater and voltage across 40W is more (V=IR) so 40W bulb will glow brighter.