1.Basic Electricity with balloons:
There are many simple ways to explore static electricity using simple materials.
2.Electromagnetic wave generation:
Electromagnetic waves are created by oscillating charges and have the same frequency as the oscillation. They are synchronised oscillations of electric and magnetic fields. In a vacuum, electromagnetic waves travel at the speed of light, commonly denoted by c. There, depending on the frequency of oscillation, different wavelengths of the electromagnetic spectrum are produced Activities using balloons and other items; a brief tutorial about static electricity.
Students can do each of these investigations as a demonstration.
3.Electromagnetic Induction and Lenz law:
Electromagnetic, or magnetic, induction is the production of an electromotive force across an electrical conductor in a changing magnetic field. The induced electric current flows in a direction such that the current opposes the change that induced it.