9.1 flow of electricity Flashcards
1
Q
cell [mostly 1.5V] meaning
A
component that changes chemical energy to electrical energy
2
Q
battery meaning
A
2 or more cells connected together in series
3
Q
components meaning
A
parts of a circuit such a cells, lamps, switches
4
Q
define terminals
A
- the connectors on a component
- and -
- exp: on a cell, a battery or an ammeter
5
Q
negative charge meaning
A
- the property of electrons
- which makes them attracted to + charges
- repelled by - charges
6
Q
define electrons
A
negatively charged particles which flow in wires to create the current
7
Q
repel meaning
A
things to move apart by a force
8
Q
attract meaning
A
things to move closer together by a force
9
Q
define current
A
the flow of electrons in a circuit
10
Q
define free moving electron
A
an electron within a conductor but not permanently attached to any atom
11
Q
the + and - symbols on cells show the _______ and _______ terminals
A
positive, negative
12
Q
electrons in a ______ move randomly
A
metal
