Question

The diagram shows a magnet being placed in a magnetic field. What will happens to the bar magnet?

• A. The bar magnet does not react to the magnetic field
• B. The bar magnet moves in the direction of the field
• C. The bar magnet moves in the opposite direction of the field
• D. The bar magnet rotates clockwise by ${90}^o$

Answer 1

The correct option is D The bar magnet rotates clockwise by ${90}^o$

Net force on magnet will be zero but there is torque due to which magnet rotate and stop when magnet is along field line i.e. after $90°$ rotation clockwise.