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Why do iron filings arrange themselves i...

Why do iron filings arrange themselves in a definite pattern when sprinkled around a magnet?

Text Solution

Verified by Experts

This is due to the reason that each piece of iron filling becomes a small magnet and experiences a force in a certain direction in the magnetic field due to the magnet.
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A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern. (a) Why do iron filings arrange in a pattern? (b) What does the crowding of iron filings at the end of the magnet indicate ? (c) What does the lines, along which the iron filings align, represent? (d) Draw a neat diagram to show the magnetic field lines around a bar magnet. (e) Write any two properties of magnetic field lines.

A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in particular pattern. The closer field lines indicate:

Knowledge Check

  • A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in particular pattern. What is SI unit of magnetic field:

    A
    Pascal
    B
    `Nm^(2)`
    C
    Tesla
    D
    No unit

  • While doing an experiment Neeraj fixed a sheet of white paper on a drawing board. He placed a bar magnet in the centre of it. He sprinkled some iron filings uniformly around the bar magnet. Then he tapped the board gently and observed that the iron filings arranged themselves in a particular pattern. The lines along which the iron filings align represent ______. It moves from ______

    A
    Gravitational force, North to South pole
    B
    Magnetic field lines, South to North pole
    C
    Gravitational force, South to North pole
    D
    Magnetic field lines, North to South pole

  • While doing an experiment Neeraj fixed a sheet of white paper on a drawing board. He placed a bar magnet in the centre of it. He sprinkled some iron filings uniformly around the bar magnet. Then he tapped the board gently and observed that the iron filings arranged themselves in a particular pattern. Why do the iron filings arrange in a pattern?

    A
    Due to force exerted by the magnet within its magnetic field.
    B
    Due to force exerted by the magnet outside the magnetic field.
    C
    Due to pressure of magnetic field.
    D
    Due to gravitational force.

    • Similar Questions

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    While doing an experiment Neeraj fixed a sheet of white paper on a drawing board. He placed a bar magnet in the centre of it. He sprinkled some iron filings uniformly around the bar magnet. Then he tapped the board gently and observed that the iron filings arranged themselves in a particular pattern. What does the crowding of iron filings at the end of the magnet indicate?

    A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in particular pattern. What do the lines along which the iron fillings align represent?

    A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in particular pattern. Why do the iron fillings arrange themselves in a particular pattern ?

    A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in particular pattern. What does the crowding of iron filings at the end of the magnet indicate?

    While doing an experiment Neeraj fixed a sheet of white paper on a drawing board. He placed a bar magnet in the centre of it. He sprinkled some iron filings uniformly around the bar magnet. Then he tapped the board gently and observed that the iron filings arranged themselves in a particular pattern. Which of these is not a source of magnetic field?

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