An electric generator is a device that converts electrical energy into mechanical energy.

With the help of a neat diagram,describe how you can generate induced current in a circuit.

Describe an experiment to demonstrate the force acting on a current-carrying conductor placed in a magnetic field.

Which of the following is used in a fire alarm?

Draw the pattern of magnetic field lines through and around a current-carrying circular loop of wire. How would the strength of the magnetic field produced at the centre of the circular loop be affected if: $(i)$ the strength of the current passing through this loop is doubled? $(ii)$ the radius of the loop is reduced to half of the original radius?

Why is the metallic body of electrical devices connected to the earth wire?