A device that stores electricity for future use.

A unit that measures the current.

The unit of measure of electrical force, named after Alessandro Volta, the inventor of the battery.

The relationship, in a circuit using direct current, among voltage, current and resistance: One volt of electricity (E) is needed to force one ampere of current (I) through one ohm of resistance (R).

Electric current that flows only in one direction, such as that supplied by a battery.

The unit of measure of electrical charge.

A wind generator; wind plant.

A substance that allows electricity to pass through it.

Any combustible organic material, as oil, coal, or natural gas, derived from the remains of former life.

Involves taking power from the transmission system to end users, converting it to voltages at which it is ultimately required.

When an electrical current is produced without any physical connection between the two parts of the circuit.

Unlike charges attract each other and like charges repel each other.

Electricity that is "at rest" or static until it is discharged.