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200W and 100W bulbs, both meant for ...

200W and 100W bulbs, both meant for operation at 220V are connected in series to a 200V supply. The power consumed by them will be approximately :

A

33W

B

66W

C

100W

D

300W

Text Solution

Verified by Experts

The correct Answer is:
B
`R_1=((220)^2)/100 Omega` and `R_2=((220)^2)/200Omega`
`R=R_1+R_2 =(220)^2 [1/100+1/200] =(3xx(220)^2)/200`
Power consumed = `((220)^2)/R=200/3`=66 W
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