equations Flashcards
1
Q
potential difference (v) =
A
current (i) x resistance (R)
2
Q
efficiency (eff) =
A
useful output / total input
3
Q
power (P) =
A
work done / time
energy transferred / time
potential difference x current
current x current x resistance
4
Q
gravitational potential energy (Ep) =
A
mass x gravitational field strength x height
5
Q
kinetic energy (Ek) =
A
0.5 x mass x speed x speed
6
Q
density =
A
mass / volume
7
Q
energy transferred (E)=
A
power x time
charge flow x potential difference
8
Q
charge flow (Q) =
A
current x time
9
Q
work done (w) =
A
force x distance
