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)
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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
costs
(Years) (£) (£)
__________________________________
Potential difference = current × resistance
(Voltage, V) (Amperes, I) ()…read more

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