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5.10 How electricity is generated Reviews Exercises 1. Define the term “generator." 2. State the three major parts of a direct current generator. 3. With the aid of a sketch, explain how e.m.f. is induced in a direct current generator. 4. Explain how a simple direct current generator may be improved for greater e.m.f. induction. 5. Define the term ''piezoelectricity." 6. With the aid of sketches, explain how thermocouples may be used to produce a higher voltage. 7. Explain how solar cells produce electricity. 8. List three applications of solar cells in everyday life. 9. State two uses of geothermal energy.

This is a simple circuit that can power a light bulb without any wires, at a distance of almost 1 inch! This circuit acts as both, step up Voltage converter and also wireless electricity transmitter and receiver . This is a really easy project to do, and could be used in many ways if improved. So lets get to it! \