Circuits Flashcards
(13 cards)
What is current
It is the flow of charge around a circuit
What are charges
They are negatively charged electrons
Explain what voltage is
It is the pushing force that pushes the charge around
What is resistance
It is how easily the electricity can flow. Anything that slows down the flow of curent is resistance
How does the no. of components in a circuit change the resistance
If there are not many components then the current flows quicker than if there are many components because it uses more current
What do ammeters measure
Current
What do voltmeters measure
Voltage
What is an SPST
Simple on-off switch
What is a reed switch
Switch controlled by magnetic field
What is a semiconductor diode
Only let’s current flow in one direction
Describe series circuit
Durement has no choice of route
Describe parallel circuits
Current has a choice of route
What is resistance measured in
Ohms
