paper 1 equations Flashcards
1
Q
kinetic energy
A
1/2 x mass x velocity^2
2
Q
GPE
A
mass x height x GFS
3
Q
work done
A
power x time
4
Q
energy transferred
A
power x time
5
Q
efficiency (energy)
A
useful energy output / total energy input
6
Q
efficiency (power)
A
useful power output / total power input
7
Q
charge flow
A
current x time
8
Q
potential difference
A
current x resistance
9
Q
total resistance
A
resistance1 + resistance2
10
Q
electrical power
A
current x potential difference or
current^2 x resistance
11
Q
energy
A
charge x potential difference
12
Q
density
A
mass / volume
