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MMLU-Pro / 9892 / In order to find how much insulated wire he has left on a bobbin, a scientist…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

In order to find how much insulated wire he has left on a bobbin, a scientist measures the total resistance of the wire, finding it to be 5.18 \Omega. He then cuts off a 200-cm length and finds the resistance of this to be 0.35 \Omega. What was initially the length of wire on the bobbin?

category

physics

options

  1. 5500 cm
  2. 1500 cm
  3. 2000 cm
  4. 3500 cm
  5. 5000 cm
  6. 2500 cm
  7. 4000 cm
  8. 1000 cm
  9. 4500 cm
  10. 2960 cm

src

stemez-Physics

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Source and history

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