-Like charges repel on another. Unlike charges attract one another. Charged objects repel neutral objects. -Conductors Allow a charge to freely move through them. Neutral objects are attracted to charged objects. -Voltage is the force that moves electric charges in a circuit -4 main parts an electric circuit has is wires, cell, switch, and load -The black wire in a electrical circuit is the hot or live wire and it carries the voltage into the …showed first 75 words of 456 total…

…showed last 75 words of 456 total…energy. They presently in use are wind, tides, solar, and hydro. these sources cannot supply all the energy needed so we have to use nonrenewable sources. -Nonrenewable sources are those that cannot be replaced in a short period of time, such as a human lifetime. Nonrenewable sources included fossil fuels such as coal, oil, and gas, and nuclear fuels. -The main factors to consider when comparing electrical energy production methods are the following: Cost, Efficiency