Electricity:

Vocabulary:

Electricity: Electricity is defined as the flow of electrons in a conductor. Electrons are very small, negatively charged particles that exist in every kind of matter. This flow of electrons, also called current, can deliver energy to a point of use.
Current: Electrical current is the flow of electrons through a circuit. It carries the electrical energy to the point of use. Current can either flow in one direction (DC) or alternately in two directions (AC).
Voltage: In order for anything to move, a force must be applied that is greater in one direction than another. We call the force that causes electrons to move(flow) in an electrical circuit, voltage. Voltage is also called electromagnetic force.
Resistance: Resistance is the measure of a component's ability to resist the flow of current in a circuit. When current passes through a component that has resistance, the current decreases.
Atom: Atoms are the basic units of matter.
Heat: Heat energy (or thermal energy) is defined as a form of energy which transfers among particles in a substance by means of kinetic energy of those particles. In other words, under kinetic theory, the heat is transferred.
Light:
Pressure: The intensity of force created when a force from one object acts over the area of another. Pressure can be calculated by the formula: pressure = force / area.
Chemical Energy:
Magnetism:
Conductors:
Insulators:
Potential difference:
Circuit:
Ohm's Law: Ohm's Law describes the relationship between current, resistance, and voltage. It states tha one volt can push one amp of current through one ohm of resistance. E = I * R.
Direct current: Electricity flows in only one direction. Using the conventional theory of current flow, the power supply creates flow from the highest potential(positive terminal) to the lowest potential(negative terminal).
Alternating Current: Electricity flow alternately in one direction then in the other(cycles). This happens because the power supply pushes in one direction for one-half of a cycle. It then pushes in the other direction during the other half of a cycle.