Computer/laptop components
Central Processing Unit The brain of the computer, responsible for processing
instructions and performing calculations.
Central processing unit (CPU)
Name one essential component in an electric circuit.
Power source, a load, or a conductor.
When electric charges are in motion, it is called...
Electric current
There are elements in series and elements in parallel.
Series-parallel combination circuits.
When current is allowed to flow through a circuit it is called this.
What is closed?
The main circuit board that connects all other components.
Motherboard
Name one optional component in an electric circuit.
Control devices and protective devices.
When electric charges are at rest, it is called...
Static electricity or electrostatics
Each of the loads is connected to the positive pole and to the negative pole of the battery, so that they have the same voltage.
Parallel circuit
When current is not able to flow through the circuit the circuit is called this.
What is open?
Temporary storage for data used by the CPU.
Random access memory (RAM)
Give one example of an electrical conductor.
Metals (e.g. copper, silver, iron, aluminum and gold)
What type of current is used in cells and batteries?
Direct current (DC)
If one of the loads stops working, the rest continue to work because the electric current takes another path.
Parallel circuits
When a switch is open in a 24 volt circuit, you would read this on a volt meter across the switch.
What is 24 volts?
Power Supply Unit Converts AC power from the wall outlet to DC power used by
the computer components.
Power supply unit (PSU)
Give one example of an electrical insulator.
Wood, plastic, ceramics and glass.
What type of current is generated in power plants and used in households?
Alternating current (AC)
If one load stops working, none of them will work because the circuit will be opened.
Series circuits
If a switch is closed in a 120 volt circuit, you would read this on a volt meter across the switch.
What is 0 volts?
Processes graphics and images, used for gaming,
video editing, and other demanding tasks.
Graphics processing unit (GPU)
Define charge.
The excess or defect of electrons that a body has
Why is electricity so important?
Because electricity can be obtained from many different sources and it can easily be transformed into other forms of energy.
The loads are connected one after the other, so all of the electrical current flows through all of the loads.
Series circuits
When using a start capacitor on a motor you must also have this in the circuit.
What is a start relay?