Insulation is used to contain the electricity while it is in route to the device using the electricity. Copper wire wrapped with insulation is commonly used to provide these devices with electricity. Either the wire or the magnetic field must move to mechanically produce electricity. There are several types of batteries. Wet cell and dry cell are the most common.
Lightning is a natural method of producing electricity.
Benjamin Franklin was the first to capture the electrical current from a lightning storm using a wire as a kite tether. He invented the lightning rod. The scientific law that governs electricity is known as OHM's Law. Several mathematical formulas are used to determine the characteristics of electrical efforts. Terms used to describe the electrical effort are important to understand.