electricity Flashcards
meaning of electricity?
Electricity is the movement of electrons from one atom to another.
how does electricity work?(battery)
The battery pushes electrons out of its negative terminal. Electrons are negatively charged and move through the wire because they are attracted towards the positive terminal of the battery.
what is a electrical circuit?
Anelectrical circuitis a path in which electrons from a current source flow.
how is electrical current measured?
Electric current is measured using an ammeter. It counts the number of electrons passing through it per second.
how is electrical resistance measured?
Electrical resistance is a measure of how difficult it is for electrons to move through an object, it is measured in ohms (symbol Ω).
low resistance=
allows electrons to move easier through an object/called conductor
high resistance=
more difficult for electrons to move through an object/ insulators.
common insulators
plastic
common conductor
metal
ohm’s law
Voltage = resistance x current
what is series circuits?
One way they can be connected is one bulb after the other in a straight line. ( series circuit.)
what are parallel circuits?
two different paths which split the electrons that lead to some to the top and bottom even if disconnected.
