Q22 of 25 Page 13

A) What is meant by “magnetic filed”?

B) How is the direction of magnetic field lines at appoint determined?


C) Describe an activity to demonstrate the direction of the magnetic field generated arounda current carrying conductor.

a) “magnetic field” The space surrounding a magnet in which magnetic force is exerted is called magnetic field.


b) The direction of magnetic field at a point is determined by placing a small magnetic compass at that point. The direction of north-pole of the compass needle give the direction of magnetic field at a point


c) Connect a thick cooper wire in an electric circuit having a rectangular cardboard.Close the key so that the current flows through the copper wire. Gently tap the card-board a few times. You will observe that the iron filling align themselves showing a pattern of concentric circle around the copper wire.



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