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प्रश्न
"Magnetic field is a physical quantity that has both direction and magnitude." How can this statement be proved with the help of magnetic field lines of a bar magnet?
उत्तर
A magnetic field has both a direction and a magnitude. The north pole of the compass needle's movement inside the magnetic field is taken to indicate the magnetic field's direction. The field lines are assumed to arise from the North Pole and combine at the South Pole as a result of convention. Field lines inside the magnet go from its south pole to its north pole. These closed curves are the magnetic field lines.
The degree of closeness of the field lines reveals the relative intensity of the magnetic field. Where there are more field lines, there is a stronger field, meaning that there is more force acting on the pole of another magnet.
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संबंधित प्रश्न
Fill in the following blank with suitable words:
The earth's magnetic field is rather like that of a .......... magnet with its .......... pole in the northern hemisphere.
What is a lodestone?
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
State four properties of magnetic field lines.
State whether the magnetic field lines in part (a) represent a uniform magnetic field or non-uniform magnetic field?
Answer the following question.
Draw the pattern of magnetic field lines of
(i) a current-carrying solenoid and
(ii) a bar magnet.
List two distinguishing features between the two fields.
State briefly the molecular theory of magnetism.
What are the properties of a magnet?
State the inference drawn about the direction of the magnetic field lines on the basis of the following diagrams.
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| Figure 'a' | Figure 'b' |
Assertion (A): Magnetic field lines never intersect each other.
Reason (R): If they intersect, then at the point of intersection, the compass needle would point towards two directions, which is not possible.
