Flashcards for synoptic
what is current
The flow of charge
How many loops does a parallel circuit have
more than 1
how many loops does a series circuit have
1
what is current measured in
Amps
what is voltage
The amount of push a cell gives a current in a circuit
what is potential difference
the difference in voltage before and after a component
what is potential difference measured in
volts
what is voltage measured in
volts
what is used to measure potential difference
voltmeter
what is resistance
the opposition to the flow of current in a circuit
what is resistance measured in
ohms
when does static electricity occur
when an object either loses or gains a negative charge
what is a vector
Forces are represented by an arrow, which shows
the size of the force and the direction
what is the driving force
is a push or pull that moves an object
forwards.
what is friction
is a horizontal force which acts on objects
when they move against each other.
what is the support force
is a vertical force that is exerted on
an object that is in contact with another object.
what reduces friction
smooth surfaces
what is then tension force
is transmitted through an object
when it is pulled by forces at opposite ends.
what is the magnetic force
are strongest at the poles of a
magnet.
what are electrostatic forces
occur between opposite
charges. T
what is an electromagnet
When an electric current moves through a wire, a
magnetic field is created.
what do chemical reactions involve
breaking chemical bonds
are chemical reactions reversible
no
what could physical changes be
colour shape size state of maatter
