electrical circuits Flashcards

1
Q

what is current electricity?

A

current electricity is the flow of electrons through a conductor

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2
Q

define an electrical circuit.

A

an electrical circuit is a path for electrons to flow from and return to an energy source

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3
Q

in which direction do electrons flow in a circuit?

A

electrons flow in one direction negative to positive

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4
Q

what is the purpose of the energy source in a circuit?

A

it provides the flow of electrons for the circuit
ex: battery, wall outlet

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5
Q

what are connecting wires made out of and why?

A

connecting wires are made out conductors to give a path for electrons and are either made of plastic or rubber

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6
Q

what is the purpose of a controlled device in a circuit?

A

it can start or stop the flow of electrons Ex: switch

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7
Q

what is the purpose of a load in a circuit

A

any device that changes electrical energy into a new form Ex: light or heat

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8
Q

define an open circuit

A

a circuit that has gaps or breaks in it where electrons are not flowing

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9
Q

define an closed circuit

A

a circuit that has no gaps or breaks where electrons can flow freely

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10
Q

why are circuit diagrams useful?

A

they use symbols as a universal language so everyone around the world can understand.

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