Electricity and Magnetism Flashcards
Atoms
the basic building blocks of matter that make up everyday objects
Protons
carry a positive charge and are in the nucleus
Neutron
carry no charge and are in the nucleus
electrons
carry a negative charge and circle around the nucleus
Nucleus
in the centre of the atom and holds protons and neutrons
Electricity
is a result of the movement of electrons
Static electricity
loss of electrons
Current electricity
is a stream of electrons flowing through a conductor
Conductor
conductors let the electricity flow through them easily.
What are good conductors?
metal
Insulator
stop the flow of electricity
A good insulator is
plastic
Resistance
is the property of a substance that prevents the flow of electrons. Slows down electricity
Current
is the number of electrons that pass a point per second. Measured in amperes
Voltage
the energy that each electron carries.
Voltage is the strength of
cells
Circuit
continuous pathway along which electrons can move
Load
a light or motor
closed circuit
a complete loop in which electrons are able to move from the negative to positive terminals
open circuit
a circuit that stops the flow of electricity by having a gap
electrodes
are conductors that allow electrons to leave and enter the cell
electrolyte
a solution that contains free charged particles that are necessary to carry one electrode from another
what is an example of an electrolyte
a potato or gatorade
magnetic field
when an electric current flows through a wire, it produces a magnetic field around the wire
