Question

A student draws three magnetic field lines 1,2 and 3 of a bar magnet with the help
of a compass needle as shown in figure.
Is this configuration possible? If not, identify the mistakes observed in the figure

Answer 1

Explanation:

Magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

(b) The diagram of magnetic field lines around a bar manget is shown.

(c) Characteristics of magnetic field lines are:

1. Magnetic lines of force start from the North Pole and end at the South Pole.

2. They are continuous through the body of magnet

3. Two magnetic lines of force cannot intersect each other.

4. The relative strength of the magnetic field is shown by the degree of closeness of the field lines.

(d) Right hand thumb rule determines the direction of magnetic field associated with a current carrying conductor. It states that imagine that you are holding a current-carrying straight conductor in your right hand such that the thumb points towards the direction of current. Then your fingers will wrap around the conductor in the direction of the field lines of the magnetic field.

Answer 2

Answer:

The configuration is not possible because field lines cannot intersect.

Explanation:

• The configuration of the three magnetic field lines $1,2$ and $3$ of a bar magnet is not possible.
• The first mistake observed in the figure is that the two field lines cannot intersect.
• The second mistake observed in the figure is that the direction of the field line $'3'$ is wrong.

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