Physics Formula List
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| Physical Quantity |
Formula |
Remarks |
| Equations of motion at constant acceleration |
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| Density |
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| Weight | W = mg | W = weight, N m = mass, kg g = gravitational acceleration, m/s2 or N/kg |
| Force | F = ma | F = force, N m = mass, kg a = acceleration, m/s2 |
| Moment of a force about a point |
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| Object in equilibrium with parallel forces acting on it |
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| Work done | W = Fd |
W = work done, J F = force, N d = displacement, m |
| Kinetic energy | K.E.= 1/2 mv2 | K = kinetic energy, J m = mass, kg v = velocity, m/s |
| Potential energy |
P.E. = mgh
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Ep = potential energy, J m = mass, kg g = gravitational acceleration, N/kg or m/s2 h = gain/loss in height |
| Efficiency |
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| Power |
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P = power, W W = work done or energy transferred, J t = time, s E = energy transferred/used, J Q = thermal energy transferred, J |
| Pressure |
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| Liquid pressure |
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| Boyle's Law |
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| Specific heat capacity |
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| Specific latent heat of vaporization or fusion |
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| Wave equation |
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| Refractive index |
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n = refractive index i = angle in air/vacuum r = angle in medium c = speed of light in vacuum, m/s v = speed of light in medium, m/s |
| Critical angle |
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| Amount of charge | Q = It | Q = charge, C t = time, s |
| Ohm's Law | V = IR | V = potential difference, V I = current, A  |
| Potential difference | V = W/Q | V = potential difference, V W = work done between two points, J Q = charge, C |
| emf |
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| Electrical power | P = IV = I2R | P = power, W I = current, A V = potential difference, V (voltage) |
| Electrical energy | E = VIT | E = electrical energy, J |
| Resistance |
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p = resistivity, ohm l = length of wire, m A = cross-sectional area of wire, m2 |
| Transformer equations |
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