One should always use rubber gloves and rubber shoes when dealing with electricity.

State the condition for electromagnetic induction to take place. $A$ cylindrical bar magnet is kept along the axis of a circular coil as shown in the figure. Will there be a current induced in the coil if the magnet is rotated about its axis? Discuss.

In which of the following devices is an electric motor $NOT$ used?

What is the nature of the magnetic field lines inside a current-carrying solenoid?

Commercial electric motors do not use

An electron enters a uniform magnetic field at right angles to it as shown in the figure below. In which direction will this electron move? State the rule applied by you in finding the direction of motion of the electron.