Magnetic and Non-magnetic Materials
 

Magnetic and Non-magnetic Materials problem 10


The diagrams show three different metal rods P, Q and R, inside coils of wire. Small iron nails are placed on a wooden bench under the rods. Diagram 1 shows the situation when there are electric currents in the wires. Diagram 2 shows the situation when the currents are switched off.




Which row correctly identifies the metal rods?



 

main author and content editor: Daniel Owoyomi