Question

Why does a magnetic compass needle pointing North and South in the absence of a nearby
magnet get deflected when a bar magnet or a current carrying loop is brought near it Describe
some salient features of magnetic lines of field concept.​

Answer 1

Answer:

magnetic compass needle pointing North and South shows deflection when a bar magnet or a current carrying loop is brought near it. This happens because the magnetic fields of the compass needle and the bar magnet (or current carrying loop) interact with each other.

Describe some salient features of magnetic lines of field concept. ... Magnetic field lines do not cross one another. Closer the field lines; stronger is the magnetic field and vice-versa is also true. Magnetic field lines are closer near the poles; which shows greater strength of magnetic field near the poles.

Hope you will understand....