Electricity (Junior Cert Applied Technology): Flashcards

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Basic Electrical Concepts
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Definition of potential difference

Difference in electric potential between two points

Unit of voltage

Volts

What voltage propels

Flow of electric current

Definition of current

Rate of flow of electric charge through a conductor

Unit of current

Amperes (A)

Definition of closed circuit

Complete path allowing current to flow

Definition of resistance

Opposition to flow of electric current in a material

Unit of resistance

Ohms (Ω\Omega)

What resistance determines

How much current flows for a given voltage

Definition of power (electrical)

Rate at which electrical energy is used

Unit of power

Watts (W)

What power indicates

Electrical work done per unit time

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