That end of bar magnet (suspended so as ...

That end of bar magnet (suspended so as to rotate freely in horizontal plane) which points towards geographic north direction is known as ...... pole of magnet.

positive

negative

north

south

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One bar magnet is suspended so as to rotate freely in horizontal magnetic field. Then .....

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Magnetic north pole of Earth is nearer to geographic ...... pole.

When a bar magnet is placed on the axis of a coil with north pole facing the coil, face of coil towards the magnet behaves like ____

A magnetic needle is hung by an untwisted wire, so that it can rotate freely in the magnetic meridian. In order to keep it in the horizontal position, a weight of 0.1 g is kept or one end of the needle. If the magnetic pole strength of this needle is 10 Am, find the value of the vertical component of the earth's magnetic field. (g= 9.8 ms^(-2) )

A 100 turn closely wound circular coil of radius 10 cm carries a current of 3.2 A. (a) What is the field at the centre of the coil? (b) What is the magnetic moment of this coil? The coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 2T in the horizontal direction exists such that initially the axis of the coil is in the direction of the field. The coil rotates through an angle of 90^@ under the influence of the magnetic field. (c) What are the magnitudes of the torques on the coil in the initial and final position? (d) What is the angular speed acquired by the coil when it has rotated by 90^@ ? The moment of inertia of the coil is 0.1 kg m^2 .

A square coil of side 10 cm consists of 20 turns and carries a current of 12 A. The coil is suspended vertically and the normal to the plane of the coil makes an angle of 30^@ with the direction of a uniform horizontal magnetic field of magnitude 0.80 T. What is the magnitude of torque experienced by the coil?

A closely wound solenoid of 2000 turns and area of cross-section 1.6 xx 10^(-4)m^(2)? carrying a current of 4.0 A. is suspended through its centre allowing it to turn in a horizontal plane. (a) What is the magnetic moment associated with the solenoid? (b) What is the force and torque on the solenoid if a uniform horizontal magnetic field of 7.5 xx 10^(-2)T is set up at an angle of 30^@ with the axis of the solenoid?

KUMAR PRAKASHAN-MAGNETISM AND MATTER-SECTION D Multiple Choice Questions (MCQs) (MCQs From .DARPAN. Based On Textbook) The Earth.s Magnetism

One bar magnet is suspended so as to rotate freely in horizontal magne...
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That end of bar magnet (suspended so as to rotate freely in horizontal...
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Like poles of bar magnet ...... each other and its unlike poles .........
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Magnetic north pole of Earth is nearer to geographic ...... pole.
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At a place of the Earth, horizontal component of magnetic field is equ...
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At a place horizontal component of earth's magnetic field is sqrt(3) t...
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A place where the vertical component of Earth's magnetic field is zero...
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A place where the horizontal component of Earth's magnetic field is ze...
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At a certain place, the vertical component of the earth's magnetic fie...
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The horizontal component of earth's magnetic field is 3 xx 10^(-4) T. ...
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The magnetic dip angle at two places are 30° and 45°. Calculate ratio ...
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At equatorial line horizontal factor of the magnetic field of the eart...
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At a place on earth the horizontal component of earth's magnetic field...
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The total intensity of the magnetic field of the earth at equator is 6...
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Direction of magnetic field of Earth is ......
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The lines of force due to earth's magnetic field are ....... .
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At any place on the earth, the angle between the magnetic meridian and...
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Write the unit of magnetic dipole moment.
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What is the maximum value of angle of dip ?
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What is the formula of angle of dip ?
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