Question

explain plotting of uniform magnetic field of bar magnet !!!!!​

Answer 1

Answer:

Plotting of uniform magnetic field of earth:Fix a sheet of paper on a drawing board or a table top by means of brass pins. Place a small compass needle and mark two pencil dots exactly at the two ends of the needle. Then move the compass needle in such a way that one end of the needle coincides with the second pencil dot. Mark the position of the other end of the needle with a dot. Repeat the process of moving the compass needle to obtain several dots. Join the different dots to get a straight line as shown in below figure. Thus one line of magnetic field of earth is traced.Repeat the process from a different point and trace out another line of magnetic field . In this manner, draw several lines of magnetic field starting from the different points. Label each line with an arrow from the north pole towards the south pole of the magnet to indicate its direction. It is noticed that these lines do not cross each other. They are parallel and equi-distant.They are directed from geographic south to geographic north (i.e., the direction in which a magnetic needle suspended freely in a horizontal plane, rests).

Answer 2

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Plotting of uniform magnetic field of earth:

Place a small compass needle and mark two pencil dots exactly at the two ends of the needle. Repeat the process from a different point and trace out another line of magnetic field . In this manner, draw several lines of magnetic field starting from the different points.