Current And Circuit Symbols Flashcards
1
Q
What is an electric current
A
A flow of electrical charge
2
Q
What is required for a electrical charge to flow through a closed system
A
Must include a source of potential difference
3
Q
What is potential difference and what is it measured in
A
Driving force that pushes the charge around
Volt V
4
Q
What is current measured in
A
Amperes
5
Q
What is resistance and what’s it measured in
A
Anything that slows the flow down
Unit: ohm
6
Q
What is the current at any point in a single closed loop
A
The current is the same
7
Q
What makes the current smaller
A
The greater the resistance across a component
8
Q
What is the rate of flow equal to
A
The size of the current
9
Q
What is the formula for the charge flow
A
Current x time
10
Q
What is charge flow measured in
A
Coulombs C
