9.3 Explaining current in circuits Flashcards
Current flow and resistance
1
Q
How can the flow of current in electrical circuits be controlled?
A
Through various components like diodes and switches.
2
Q
How do switches affect current flow?
A
They cut off the current in a circuit by breaking loops.
3
Q
What is resistance?
A
It is a property of a material that affects how electrons flow through it. The higher the resistance, the lower the current.
Ex: resistance wire
4
Q
What is resistance measured in?
A
Ohms Ω
5
Q
What components control resistance in a circuit?
A
Resistors or variable resistors.
