Physics-Magneto-statics

Test Preparation on Physics - Magneto-statics

1.

If magnetic lines of force are drawn by keeping the magnet vertical, then a number of neutral points will be :

1one
2two
3four
4five

2.

Ratio between total intensity of magnetic field at equator to poles is :

11 : 1
21 : 2
32 : 1
41 : 4

3.

A magnetic needle having length 2L, magnetic moment, and pole strength m units are broken into two pieces at the middle. The magnetic moment and pole strength of each piece will be respectively :

1M/2 and m/2
2M and m/2
3M/2 and m
4M and m

4.

The vertical component of the earth's magnetic field is zero at a place where the angle of dip is:

10
245
360
490

5.

A compass needle will show, which of the followingdirections at the earth's magnetic pole ?

1Vertical
2No particular direction
3Bent at 45
4Horizontal

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