Chapter 12 Magnetic Effects of Electric Current Questions-02
Questions
1. Draw magnetic field lines around a bar magnet.
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Answer
Magnetic field lines of a bar magnet emerge from the north pole and terminate at the south pole. Inside the magnet, the field lines emerge from the south pole and terminate at the north pole, as shown in the given figure.
2. List the properties of magnetic field lines.
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Answer
The properties of magnetic lines of force are as follows.
(a) Magnetic field lines emerge from the north pole.
(b) They merge at the south pole.
(c) The direction of field lines inside the magnet is from the south pole to the north pole.
(d) Magnetic lines do not intersect with each other.
3. Why don’t two magnetic field lines intersect each other?
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Answer
If two field lines of a magnet intersect, then at the point of intersection, the compass needle points in two different directions. This is not possible. Hence, two field lines do not intersect each other.
