GCSE Physics Equations

Some useful equations to know. You may not need to learn all of them, depending on your exam board, but they're useful for when you're doing practice papers etc.

Features equations for many different situations, including acceleration, efficiency, power and more!

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  • Created by: Lucy
  • Created on: 02-06-12 12:34
Preview of GCSE Physics Equations

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Physics Equations Sheet
Power = Voltage x Current
(Watts, W) (Volts, V) (Amps, I)
P = V x I
Voltage = Current x Resistance
(Volts) (Amps) (Ohms)
V = I x
Charge = Current x time
(Coulombs) (Amps) (Seconds)
Q = I x t
Energy = Voltage x Charge
E = V x Q
Total cost = number of units x cost per unit
Efficiency (%) = (useful energy out ÷ total energy in) x 100
Gravitational Potential Energy = mass x gravity x height
(J) (Kg) (m)
GPE= m x g x h
Kinetic Energy = 05 x mass x velocity2
(Kg) (m/s)
KE = ½mv2
Work done = force x distance
(Joules) (Newtons) (M)
W = F x d

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Power = Energy ÷ Time
(Watts) (Joules) (Seconds)
P = E ÷ t
Speed = Distance ÷ Time
s = d ÷ t
Acceleration = Change in velocity ÷ time
(m/s) (seconds)
Resultant force = mass x acceleration
(N) (Kg) (m/s2)
F = m x a
Weight = mass x gravity
(N) (kg) (N/kg)
w = m x g
Momentum = mass x velocity
(Kg m/s) (Kg) (m/s)
p = m x v
Wave speed = frequency x wavelength…read more

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Payback Time = cost of installation ÷ savings per year in fuel
(Years) (£) (£)
Potential difference = current × resistance
(Voltage, V) (Amperes, I) ()…read more


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