Question

__________ is the best test for magnetism.

• A. None
• B. Rotation
• C. Repulsion
• D. Attraction

Answer 1

The correct option is C

Repulsion

Attraction can occur in the case of two magnets (with opposite poles brought together) as well as between a magnet and ferrous objects such as iron. Therefore if both the pieces attract each other, they may be magnets or one may be the magnet and other may be a ferrous material. Whereas, repulsion is possible only in case of two magnets (with same poles brought together). Therefore, repulsion is a true test for magnetism.