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प्रश्न
Explain the following :
Several soft iron pins can cling, one below the other, from the pole of a magnet.
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उत्तर
Several soft iron pins can cling one below the other from the pole of a magnet because the magnet induces magnetism in an iron nail which gets attracted by the magnet and clings to it. This magnetized nail magnetizes the other nail near it by magnetic induction and attracts it. This process continues until force of attraction on first nail is sufficient to balance the total weight of all nails in chain.
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संबंधित प्रश्न
Draw a diagram to show the magnetic field lines around a bar magnet.
Explain why, two magnetic field lines of not intersect each other.
The magnetic field lines:
(a) intersect at right angles to one another
(b) interest at an angle 45° to each another
(c) do not cross one another
(d) cross at an angle of 60° to one anotherv
The wire in Figure below is being moved downwards through the magnetic field so as to produce induced current.
(a) moving the wire at a higher speed?
(b) moving the wire upwards rather than downwards?
(c) using a stronger magnet?
(d) holding the wire still in the magnetic field?
(e) moving the wire parallel to the magnetic field lines?
State whether the magnetic field lines in part (a) represent a uniform magnetic field or non-uniform magnetic field?
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
What is the magnitude of the magnetic field at each neutral point? Give a reason for your answer.
Complete the following sentence :
If the field lines in a magnetic field are parallel and equidistant, the magnetic field is __________ .
The intensity of a magnetic field is indicated by the lines of ______.
Complete the following diagram of magnets to show the lines of force.
State whether true or false. If false, correct the statement.
Magnetic field lines always repel each other and do not intersect.
