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In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm of the potentiometer wire. If the cell is shunted by a resistance of 5Ω, a balance is found when the cell is connected across 40 cm of the wire. Find the internal resistance of the cell.
  • a)
  • b)
    1.5Ω
  • c)
  • d)
    2.5Ω
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In a potentiometer experiment, it is found that no current passes thro...
On balancing,
(R+r) /R = I1/I2
1+ r/R = 52/40
r/R = 0.3
=> r =0.3 x 5 = 1.5 ohm
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In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm of the potentiometer wire. If the cell is shunted by a resistance of 5Ω, a balance is found when the cell is connected across 40 cm of the wire. Find the internal resistance of the cell.a)1Ωb)1.5Ωc)2Ωd)2.5ΩCorrect answer is option 'B'. Can you explain this answer?
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In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm of the potentiometer wire. If the cell is shunted by a resistance of 5Ω, a balance is found when the cell is connected across 40 cm of the wire. Find the internal resistance of the cell.a)1Ωb)1.5Ωc)2Ωd)2.5ΩCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm of the potentiometer wire. If the cell is shunted by a resistance of 5Ω, a balance is found when the cell is connected across 40 cm of the wire. Find the internal resistance of the cell.a)1Ωb)1.5Ωc)2Ωd)2.5ΩCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm of the potentiometer wire. If the cell is shunted by a resistance of 5Ω, a balance is found when the cell is connected across 40 cm of the wire. Find the internal resistance of the cell.a)1Ωb)1.5Ωc)2Ωd)2.5ΩCorrect answer is option 'B'. Can you explain this answer?.
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