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All Equations

This is a list of equations which you might need to use
for your GCSE Physics Exam.
At the bottom of the page there are links to equations
which the different examination boards have used in the past.
These links will take you to a page which you can print
in order to revise these equations.

Electricity

P = V x I.     Power = Voltage x Current.

V = I x R.    Voltage = Current x Resistance.

Q = I x t.    Charge = Current x time.

E = V x Q.    Energy = Voltage x Charge.

Total Cost = Number of Units x Cost per Unit.

Energy

Efficiency (%) = (useful energy out ÷ total energy in) x 100.

GPE = mgh.      GPE = mass x gravity x height.

KE  =  ½mv².     Kinetic Energy = 0·5 x mass x velocity².

W = F x d.      Work done = Force x distance.

W = E.     Work done = Energy transferred.

P = E ÷ t.              Power = Energy ÷ time.

Forces and Motion

s = d ÷ t.     speed = distance ÷ time.

a = (v-u) ÷ t.     acceleration = change in velocity ÷ time.

F = m x a.          Force = mass x acceleration.

w = m x g.                weight = mass x gravity.

m = F x d.    moment = Force x perpendicular distance from pivot.

p = F ÷ a.                 pressure = Force ÷ area.

d = m ÷ v.               density = mass ÷ volume.

Waves

v = f x l.     velocity  =  frequency  x  wavelength.

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Copyright © 2008 Dr. Colin France. All Rights Reserved.