# GCSE Edexcel Physics Formulae

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• GCSE Physics Formulae
• Moments
• Moment = force x distance from pivot
• Motion
• Speed = distance/ time
• Acceleration= Change in velocity/ Time taken             a = (v-u)/t
• Energy
• Energy transferred = work done
• Kinetic energy = ½ x mass x speed2          KE = 1/2 x m x v2
• Change in potential energy = mass x change in height x gravitational field strength*
• *Gravitational field strength takes into account the force of gravity. For calculations just consider it to be 10.
• Electricity
• Voltage = current x resistance      V= I x R
• Electrical power = voltage x current      P= I x V
• Charge = current x time  Q= I x t
• Weight
• Weight = mass x gravitational field strength*  W = m x g
• *Gravitational field strength takes into account the force of gravity. For calculations just consider it to be 10.
• Work
• Work done = Force x Distance moved in direction of force         E= F x d
• Magnetism - transformers
• Input voltage/output voltage= primary turns/secondary turns
• Density
• Density= Mass/Volume
• Pressure
• Pressure = force/area
• Pressure difference= height x density x gravitational field strength
• Waves
• Wave speed = frequency x wavelength
• Refractive index = sin (angle of incidence) / sin (angle of refraction)
• Sin (critical angle) = 1/ refractive index
• *Gravitational field strength takes into account the force of gravity. For calculations just consider it to be 10.
• Density= Mass/Volume
• Wave speed = frequency x wavelength
• Charge = current x time  Q= I x t