Physics Formulae

Potential Difference = Current * Resistance

V = IR

Charge = Current * Time

Q = IT

Energy = Charge * Potential Difference

E = QV

Energy = Current * Time * Potential Difference

E = ITV

Power = Current * Potential Difference

P = IV

Potential Difference = Current × Resistance

V = IR

Charge = Current × Time

Q = IT

Energy = Charge × Potential Difference

E = QV

Energy = Current × Time × Potential Difference

E = ITV

Power = Current × Potential Difference

P = IV

Speed = frequency × wavelength

V = F * Wavelength

Frequency = 1 / Period

(f=\frac{1}{T})

Average Acceleration = Change in Velocity / Change in Time

(a = \frac{\Delta v}{\Delta t})

Resultant Force = Mass × Acceleration

F = MA

Load on a Spring = Spring Constant × Extension

F = KX

Work done = Force * Direction moved in direction of force

W = FD

Change in gravitational potential energy = Mass Gravitation field strength change in height

GPE = MGH

Kinetic energy = ½ mass speed²

KE = ½ mv²

Weight = mass * gravitational field strength

W = MG

Power = energy transferred divided by time

P = E/T

Efficiency = useful output energy divided by total input energy

E = E out / E in

Density = Mass / Volume

D = M/V

Average speed = Distance / Time

Speed = D/T

Gradient of angle = rise / run

Change in y / Change in x