ohms law vocab quiz

Ampere → The SI unit of electric current. A flow of one coulomb of charge per second is one ampere (symbol

A).

Alternating Current → Electric current that reverses its direction of flow in a regular pattern.

Capacitor → A device used to store charge in a circuit.

Diode → An electronic device that restricts current to flow in a single direction in an electric circuit.

Direct Current → Electric current that flows in only one direction.

Electric Circuit → A closed path that electric current follows.

Electric Current → The net movement of electric charges in a single direction, measured in amperes.

Electric Power → The rate at which electrical energy is converted into another form, such as light, heat, or

mechanical energy (or converted from another form into electrical energy.)

Ohm → The SI unit for electric resistance. One ohm (symbol Ω) is the resistance of a device that draws a

current of one ampere when a voltage of one volt is impressed across it.

Ohm’s Law → States that the current in a circuit equals the voltage difference divided by the resistance.

Parallel Circuit → A circuit in which electric current has more than one path to follow.

Potential Difference → The difference in electric potential (voltage) between two points. Free charge flows

when there is a difference and will continue until both points reach a common potential.

Resistance → The tendency of a material to oppose electron flow and to convert electrical energy into other

forms of energy, such as thermal energy and light; measured in ohms (Ω).

Schematic Diagram → A diagram that describes an electric circuit, using special symbols to represent different

devices in the circuit.

Series Circuit → A circuit in which electric current has only one path to follow.

Superconductivity → A property of a material that has infinite conductivity at very low temperatures, so that

charge flows through it without resistance.

Voltage Difference → Related to the force that causes electric charges to flow; measured in volts (V).

Voltage Source → A device, such as a battery or generator, that provides a potential difference.