4. A step-up transformer A. lowers the voltage to make it safe for household consumption B. raises the voltage for long distance travel C. lowers the voltage for lesser bill payment D raises the voltage for faster travel 5. Whenever you switch/turn on an appliance, electricity travels from A. power plants transmission substations-distribution substations residences B. transmission substations power plants residences -dishrit substations C. power plants--distribution substations transmission substations residences D. distribution substations power plants transmission substations residences 6. Power stations generate alternating current (AC) because A. the transformers they use work with AC B. it is more efficient and economical C. it is easier to generate, safer and more economical to transmit D. it is used in mobile devices and gadgets 7. The relationship between electricity and magnetism was discovered by A. Benjamin Franklin B. Michael Faraday C. James Watt D. Hans Christian Oersted B. A generator transforms A. mechanical energy to electrical energy B. electrical to mechanical energy C. mechanical to heat energy D. electrical to light energy 9. In a coll of wire, electric current may be induced A. by holding a magnetic compass beside it B. by rapidly inserting a magnet into and out