Question

The metallic pointer of a plotting compass gets deflected only when it is placed near a bar magnet because the pointer has :; A. electromagnetism; B. permanent magnetism; C. induced magnetism; D. ferromagnetism

Answer 1

Answer:

B. permanent magnetism

Explanation:

The metallic pointer placed near a bar magnet thats why the metallic pointer has permanent magnetism.

The needle of the compass is made of permanent magnetic material.

After removal of magnetizing force, the permanent material retains its magnetism.

The permanent magnet is made of hard ferromagnetic material like alnico, steel and ferrite. Every permanent magnet has unique physical and chemical properties.