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MHT CET202415 May 2024Morning ShiftPhysicsCurrent ElectricityActual

A cell balances against a length of 150 cm on a potentiometer wire when it is shunted by a resistance of 5 . But when it is shunted by a resistance of 10 , then balancing length increases by 25 cm . The balancing length when the cell is in an open circuit is

Options

  1. A200 cm
  2. B225 cm
  3. C210 cm
  4. D250 cm

Correct answer

C. 210 cm

Step-by-step solution

array ll & r = s ( l-l_ b l_ b ) & 5 ( l-150 150 )=10 ( l-175 175 ) & l-150 6 =2 ( l-175 7 ) & 7 l-1050=12 l-2100 & 5 l=1050 & l=210 ~cm array

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