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A short bar magnet in horizontal plane has its axis along the magnetic north-south direction. Null points are found on the axis of the magnet. The earth's magnetic field at the place is 0.4 G and the angle of dip is zero. Find the total magnetic field on the normal bisector of the magnet at the same distance at the null points from the centre of the magnet.?
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Problem: A short bar magnet in horizontal plane has its axis along the magnetic north-south direction. Null points are found on the axis of the magnet. The earth's magnetic field at the place is 0.4 G and the angle of dip is zero. Find the total magnetic field on the normal bisector of the magnet at the same distance at the null points from the centre of the magnet.

Solution:

  1. Null points: Null points are points on the axis of the magnet where the net magnetic field is zero. In this case, the magnet is oriented along the north-south direction, so the null points will also lie on this axis.

  2. Earth's magnetic field: The earth's magnetic field at the place is given as 0.4 G. This field will also be present at the null points on the axis of the magnet.

  3. Angle of dip: The angle of dip is zero, which means that the magnetic field lines are parallel to the horizontal plane.

  4. Total magnetic field: To find the total magnetic field on the normal bisector of the magnet at the null points, we need to consider the contributions from the magnet and the earth's magnetic field. The magnetic field due to the magnet can be calculated using the formula:


    B = (μ0/4π) [(2M)/(r3)]



    where B is the magnetic field, M is the magnetic moment of the magnet, r is the distance from the magnet to the point where the magnetic field is being calculated, and μ0 is the permeability of free space.

  5. Normal bisector: The normal bisector is the line that is perpendicular to the magnet and passes through its centre. The distance from the null points to the centre of the magnet will be the same as the distance from the normal bisector to the centre of the magnet.

  6. Final answer: Using the formula for the magnetic field due to the magnet and adding it to the earth's magnetic field, we can find the total magnetic field at the null points. Since the null points are equidistant from the magnet, the same field will be present at the normal bisector. The final answer will depend on the values of the magnet's magnetic moment, distance from the magnet to the null points, and the permeability of free space.

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A short bar magnet in horizontal plane has its axis along the magnetic north-south direction. Null points are found on the axis of the magnet. The earth's magnetic field at the place is 0.4 G and the angle of dip is zero. Find the total magnetic field on the normal bisector of the magnet at the same distance at the null points from the centre of the magnet.?
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A short bar magnet in horizontal plane has its axis along the magnetic north-south direction. Null points are found on the axis of the magnet. The earth's magnetic field at the place is 0.4 G and the angle of dip is zero. Find the total magnetic field on the normal bisector of the magnet at the same distance at the null points from the centre of the magnet.? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A short bar magnet in horizontal plane has its axis along the magnetic north-south direction. Null points are found on the axis of the magnet. The earth's magnetic field at the place is 0.4 G and the angle of dip is zero. Find the total magnetic field on the normal bisector of the magnet at the same distance at the null points from the centre of the magnet.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A short bar magnet in horizontal plane has its axis along the magnetic north-south direction. Null points are found on the axis of the magnet. The earth's magnetic field at the place is 0.4 G and the angle of dip is zero. Find the total magnetic field on the normal bisector of the magnet at the same distance at the null points from the centre of the magnet.?.
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