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प्रश्न
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
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उत्तर
When two pins are hung by their heads from the same pole of a magnet, they acquire same polarity. Because like poles repel each other, their pointed ends move apart.
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संबंधित प्रश्न
Draw a diagram to show the magnetic field lines around a bar magnet.
Which of the following statements is incorrect regarding magnetic field lines?
(a) The direction of magnetic field at a point is taken to be the direction in which the north pole a magnetic compass needle points.
(b) Magnetic field lines are closed curves.
(c) If magnetic field lines are parallel and equidistant, they represent zero field strength.
(d) Relative strength of magnetic field is shown by the degree of closeness of the field lines.
The figure given below shows the magnetic field between two magnets:
Copy the diagram and label theother poles of the magnets.
Which is the weaker magnet?
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
Explain the method of plotting the magnetic field lines by using a small compass needle.
What conclusion is drawn regarding the magnetic field at a point if a compass needle at that point rests in any direction? Give reason for your answer.
Select the correct option:
Nickel is a:
Complete the following diagram of magnets to show the lines of force.
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.
