# 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!

- Created by: Lucy
- Created on: 02-06-12 12:34

First 135 words of the document:

Physics Equations Sheet

Power = Voltage x Current

(Watts, W) (Volts, V) (Amps, I)

P = V x I

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Voltage = Current x Resistance

(Volts) (Amps) (Ohms)

V = I x

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Charge = Current x time

(Coulombs) (Amps) (Seconds)

Q = I x t

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Energy = Voltage x Charge

E = V x Q

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Total cost = number of units x cost per unit

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

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Gravitational Potential Energy = mass x gravity x height

(J) (Kg) (m)

GPE= m x g x h

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Kinetic Energy = 05 x mass x velocity2

(Kg) (m/s)

KE = ½mv2

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Work done = force x distance

(Joules) (Newtons) (M)

W = F x d

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