Draw the lines of force around a solenoid and exhibit it.

State the Motor Rule. If the directions of current in the conductor and the magnetic field are the same, in which way will the conductor move?

Construct a simple DC motor and show its working.

Dismantle the parts of a loudspeaker that is defunct and arrange them on a sheet of paper one by one and exhibit. What is the reason for its voice coil being very thin?

Draw a diagram of the structure of an electric motor, mark its parts and exhibit.