How do you account for the following facts?
A. Iron becomes magnetised when placed in a coil carrying direct current.
B. Bar magnets lose their magnetism when heated strongly.
C. Steel makes better permanent magnet than soft iron.
D. Soft iron keepers help to prevent the magnets from losing their magnetic properties.
Answer:A
How do you account for the following facts?
A. Iron becomes magnetised when placed in a coil carrying direct current. B. Bar magnets lose their magnetism when heated strongly. C. Steel makes better permanent magnet than soft iron. D. Soft iron keepers help to prevent the magnets from losing their magnetic properties.