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Maharashtra State BoardSSC (English Medium) 10th Standard

The figure given below shows the magnetic field around the conductor. Study it and answer the questions: What changes are caused by increasing current? - Science and Technology 1

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Question

The figure given below shows the magnetic field around the conductor. Study it and answer the questions:

  1. What changes are caused by increasing current?
  2. What do you see when the magnetic needle is kept a little away from the wire?
  3. In the second part of the figure, the iron filings arrange themselves in a circular manner around the wire. Why does this happen?
Answer in Brief
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Solution

  1. If the current through the wire is increased, the intensity of the magnetic field also increases.
  2. It starts deflecting less when the magnetic needle is kept away from the wire.
  3. The iron fillings get magnetised and arrange themselves in a circular manner around the wire.
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