P2-electricity and magnetism Flashcards
1
Q
conductors have
A
low resistance
2
Q
insulators have
A
high resistance
3
Q
the resistance is a measure of
A
how easy it is to pass through a component
4
Q
resistance is calculated by measuring the
A
potential difference and the current
5
Q
static electricity:
A
by rubbing insulators together, electrons are transferred, which gives the objects magnetic charges
6
Q
like charges=
A
repel
7
Q
opposite charges=
A
attract
8
Q
series circuits:
A
- contain only one loop
- the current is the same everywhere
- the potential difference across each component adds up to the potential difference across the battery
9
Q
if one component/wire breaks (in a series circuit)
A
the current stops flowing everywhere
10
Q
parallel circuits:
A
- contain multiple branches
- currents in all the branches add up to make the total current
- the potential difference across each component is the same as the potential difference across the battery
11
Q
current is the amount of
A
charge flowing per second
12
Q
the current is measured with an
A
ammeter
13
Q
the unit for current is
A
amp
