1. When a magnet is broken, each piece becomes a complete magnet because :
(a) the number of electrons in one piece are different from that of the other (b) each piece becomes a complete magnet since molecular magnets cannot be broken (c) the density of atoms in the pieces are different (d) none of these
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Magnetism » Exercise - 15. A magnet of pole strength m and length lis broken into two pieces. The pole strength of each piece is : (a) m (b) m/2 (c) 2m (d) m/4
555555555522. What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? (a) 18.75 At (b) 30 At (c) 300 At (d) 187 At