Atoms
What is the neutral electric charge?
Neutron
When electric charges are in motion, it is called...
Electric current
Name one essential component in an electric circuit.
Power source, a load, or a conductor.
What is the symbol for electric current?
(I)
There are elements in series and elements in parallel.
Series-parallel combination circuits.
What is the positive electric charge?
When electric charges are at rest, it is called...
Static electricity or electrostatics
Name one optional component in an electric circuit.
Control devices and protective devices.
What is the symbol for electrical resistance?
(R)
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
What is the negative electric charge?
Electron
Direct current (DC)
Give one example of an electrical conductor.
Metals (e.g. copper, silver, iron, aluminum and gold)
volt (V)
If one of the loads stops working, the rest continue to work because the electric current takes another path.
Parallel circuits
What is the basic unit of matter?
Atoms
What type of current is generated in power plants and used in households?
Alternating current (AC)
Give one example of an electrical insulator.
Wood, plastic, ceramics and glass.
What is the unit of electric current?
ampere or amp (A)
The loads are connected one after the other, so all of the electrical current flows through all of the loads.
Series circuits
What does the Law of Charges state?
Charges of an equal sign repel each other, while charges of a different sign attract each other.
Because electricity can be obtained from many different sources and it can easily be transformed into other forms of energy.
Define charge.
The excess or defect of electrons that a body has
ohm (Ω)
If one load stops working, none of them will work because the circuit will be opened.
Series circuits