MAGLEV train incorporates the magnetic forces to lift, propel and guide the track.

Write the uses of a magnet.

Which magnet will you use when the iron is to be separated from trash?

Choose the odd one and give reason:

Describe a method by which you could directly measure the strength of an electromagnet's field by measuring the force produced by it and compare the strengths of different electromagnets. You should note the factors that affect the strength of the field and how you would vary them?

A soft-iron rod and a steel rod each have coils around them. Both rods are initially un-magnetised. The coils are attracted to circuits, as shown in the second diagram.

Which of the two arrangement would be used as the electromagnet on the crane in a scrap metal yard?

How will you make levitating propeller?

Write any two uses of magnet.