Physics 2.1.2 Flashcards
What is needed for Electrical Charge to Flow through a Closed Circuit?
A Source of Potential Difference.
Sources of Potential Difference: (3)
-A Cell.
-Batteries.
-Electrical Generator.
A Cell makes one end of the Circuit ___, and the other ___. This sets up a ___ ___ across the Circuit.
Positive, Negative, Potential Difference.
What is Potential Difference sometimes known as?
Voltage, V.
Define ‘Potential Difference’:
The Energy Transferred per Unit Charge Flowing from one point to another.
Energy Transferred = …
Work Done.
Potential Difference = …
Work Done/Energy Transferred / Charge
Define ‘Electric Current’:
The Flow of Electrical Charge.
What is Current Measured in?
Amperes, Amps (A).
The size of the Electric Current is the…
Rate of Flow of Electrical Charge.
What is Charge Measured in?
Coulombs (C).
Current = …
Charge / Time
Charge = …
Current X Times
