Ohm's Law Vocab

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Ampere

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

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Alternating Current

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

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18 Terms

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Ampere

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

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Alternating Current

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

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Capacitor

A device used to store charge in a circuit.

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Diode

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

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Direct Current

Electric current that flows in only one direction.

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Electric Circuit

A closed path that electric current follows.

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Electric Current

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

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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.)

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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.

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Ohm's Law

States that the current in a circuit equals the voltage difference divided by the resistance.

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Parallel Circuit

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

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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.

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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).

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Schematic Diagram

A diagram that describes an electric circuit, using special symbols to represent different devices in the circuit.

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Series Circuit

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

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Superconductivity

A property of a material that has infinite conductivity at very low temperatures, so that charge flows through it without resistance.

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Voltage Difference

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

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Voltage Source

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