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Grade: 12

                        

16. A 100 W bulb B 1 , and two 60 W bulbs B 2 and B 3 , are connected to a 250 V source, as shown in the figure. Now W 1 , and W 2 and W 3 are output powers of the bulbs B 1 , B 2 and B 3 respectively. Then (A) W 1 >W 2 =W 3 (B) W 1 >W 2 >W 3 (C) W­ 1 2 =W 3 (D) W 1 2 3 Please clear my doubt..when they have said that the power is 100W 60W etc..how does it change in this situation ?..if you are saying they change with applied voltage then for what voltage is the power 100W ?..please explain..and..if I try to find current through the two resistors in the top..then I get extra variables and the problem is becoming complicated as I write i(R1+R2)=250 ..now how should I use the given power to eliminate variables ?..I just dont understand what the power they have given means exactly..and how am I supposed to use it ? Thank you very much ! :)

9 years ago

Answers : (1)

iit jee
44 Points
							

HI,

I THINK ITS A)W1>W2=W3...........................

9 years ago
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Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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