When is the force experienced by a current-carrying conductor placed in a magnetic field largest ?

List three sources of magnetic fields.

How does a solenoid behave like a magnet? Can you determine the north and south poles of a current carrying solenoid with the help of a bar magnet? Explain.

Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?

Draw a labelled diagram of an electric motor. Explain its principle and working. What is the function of a split ring in an electric motor?