GCSE Equations - All Flashcards
kinetic energy
1/2 x mass x speed^2
gravitational potential energy
mass x gravitational field strength x height
power (P1)
work done/time taken or energy transferred/time taken
efficiency
useful energy output/total energy input
elastic potential energy
1/2 x spring constant x extension^2
charge
current x time
potential difference
current x resistance
total resistance
resistance of component 1 + resistance of component 2
power (P2) (no)
current x potential difference
power (P2) (yes)
current^2 x resistance
energy transferred (power)
power x time
energy transferred (pd)
charge x potential difference
density
mass/volume
change in thermal energy
mass x specific heat capacity x temperature change
thermal energy for change in state
mass x specific latent heat
for a gas
pressure x volume = constant
wave speed
frequency x wavelength
time period
1/frequency
magnification
image height/object height
force (P7)
magnetic flux density x current x length of conductor
P7 coils divide
pd across primary coil/pd across secondary coil = number of turns in primary coil/number of turns in secondary coil
P7 coils multiply
pd across primary x current in primary = pd across secondary x current in secondary
weight
mass x gravitational field strength
work done
force x distance
