All formulas GCSE Physics Flashcards
To memorise all formulas
Force
Force = mass × acceleration
N = Kg × m/s²
Frequency
Number of waves that pass a point per second
Frequency = no.waves / Time (s)
Hz S
Kinetic energy
Kinetic energy = 0.5 × mass × velocity²
J Kg m/s
Momentum
Momentum = Mass × Velocity
p = m × v
kg m/s kg m/s
Work done
Work done = force × distance
J N m
Work done is the change in energy
Power
Power = Energy Transferred ÷ Time
W J s
Efficiency
Efficiency = Useful energy (power) transferred ÷ Total energy (Power) transferred
j j
Weight
Weight = Mass × Gravitational field strength
N Kg N/Kg
Gravitational Potential energy
Gravitational potential energy = mass × gravitational field strength × height
j Kg N/Kg m
Speed
Speed = distance / time
m/s m s
Force exerted by a spring
force = extension × spring constant
N N/m m
Wave speed
Wave speed = frequency × Wavelength
m/s Hz m
Acceleration
Acceleration = Change in velocity / change in time
m/s² m/s s
Charge
Charge = current × time
C A s
Voltage (potential difference)
Voltage (V) = current (I) × resistance (r)
V A Ω
Work done (Energy Transferred)
Energy Transferred (Work done) = Charge flow × Voltage
J C V
Power
Power = Current² × Resistance
W A Ω
Power
Power = current × voltage
W A V
Density
Density = Mass / Volume
kg/m3 Kg m3
Word done (Energy transferred)
Energy transferred (word done) = Power × Time
J W s
In a series circuit,
Current is
Potential difference is
Total Resistance is
In a series circuit,
Current is the same
Potential difference is shared
Total resistance is added up
In a parallel circuit,
Current is
Potential difference is
Total resistance is
In a parallel circuit,
Current is shared
Voltage is the same
Total resistance is reduced as more components are added
