Question

Two bulbs 60 W, 220 V and 40 W, 220 V are connected in series. Which of the bulb will glow brighter?

Answer 1

Answer: It is the 60W bulb which glows brighter

Explanation:

Answer 2

Answer:

first bulb

Explanation:

power of bulbs : 40 W and 60W

power = V^2/R

for first bulb :

40= 220×220/R

R=48400/40

R=1210 ohm

for second bulb

R=48400/60

R=806.6 ohm.

Ratio of resistances =1210/806.6