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Ten identical cells connected in series areneeded to heat a wire of length one meter andradius ‘r’ by 10ºC in time ‘t’. How many cells willbe required to heat the wire of length two meterof the same radius by the same temperature intime ‘t’? [NEET Kar. 2013]
  • a)
    10
  • b)
    20
  • c)
    30
  • d)
    40
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Ten identical cells connected in series areneeded to heat a wire of le...
Resistance is directly proportionl to length
of the wire. As length is doubled so mass is
doubled and resistance is doubled.
We have
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Ten identical cells connected in series areneeded to heat a wire of length one meter andradius ‘r’ by 10ºC in time ‘t’. How many cells willbe required to heat the wire of length two meterof the same radius by the same temperature intime ‘t’? [NEET Kar. 2013]a)10b)20c)30d)40Correct answer is option 'B'. Can you explain this answer? for Class 12 2026 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Ten identical cells connected in series areneeded to heat a wire of length one meter andradius ‘r’ by 10ºC in time ‘t’. How many cells willbe required to heat the wire of length two meterof the same radius by the same temperature intime ‘t’? [NEET Kar. 2013]a)10b)20c)30d)40Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Ten identical cells connected in series areneeded to heat a wire of length one meter andradius ‘r’ by 10ºC in time ‘t’. How many cells willbe required to heat the wire of length two meterof the same radius by the same temperature intime ‘t’? [NEET Kar. 2013]a)10b)20c)30d)40Correct answer is option 'B'. Can you explain this answer?.
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