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What is magnetic filed?...

What is magnetic filed?

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The region around a magnet or a current-carrying conductor, a coil or a solenoid where the magnetic force of attraction or repulsion is felt is called the magnetic field.
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Two particles of charges +Q and -Q are projected from the same point with a velocity v in a region of unifrom magnetic filed B such that the velocity vector makes an angle 0 with the magnetic filed Their masses are M and 2M respectively Then, they will meet again for the first time at a point whose distane from the point of projection is .

The magnitude of the magnetic filed B due to the loop ABCD at origin (O) is

Knowledge Check

  • The ratio of magnetic fileds of a dipole at a distance d in the broadside - on position to end - on position is .

    A
    Zero
    B
    infintiy
    C
    2
    D
    `(1)/(2)`

  • Which of the following atom would be rappled by magnetic filed ?

    A
    Ti
    B
    Cr
    C
    Ni
    D
    Zn

  • Assertion: Magnetic lines of force never intersect. Reason: The direction of magnetic lines of force in a magnetic filed is from north to south.

    A
    Assertion and reason are correct and reason is the correct explanation.
    B
    Assertion is correct and reason is wrong
    C
    Assertion and reason are correct but reason is not the correct explanation for the assertion
    D
    Assertion and reason are wrong.

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    The torque on a rectangular coil placed in a uniform magnetic filed is large when the

    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:

    The magnetic filed on the axis of a short bar magnet at a distance of 10 cm is 0.2 oersted. What will be the field at a point, distant 5 cm on the line perpendicular to the axis and passing through the magnet ?

    What is a default file extension for all word documents ?

    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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