Physics Formulas

Physics Formulas – List of all Physics Formulas

Physics is that branch of science that basically deals with the prime constituents of matter, its characteristics and behaviour and different related elements of force and energy. Physics formulas are not meant to be memorised but conveyed in real-time and space. The application of the formulas of physics includes the concepts of mathematics and its formulas.

It is also important to remember that if one is unable to crack the theoretical part of physics, that is, understanding the theories properly, one can never find any relation between the formulas. In order to make the understanding easier, it is also recommended to know the S.I. units of Physics well.

List of All Physics Formulas

Given below is the list of all Physics formulas:

Physics Formulas Formulas
Average Speed Formula S = d/t
Acceleration Formula a =v-u/t
Density Formula  P=m/V
Power Formula P=W/t
Newton’s Second Law F = m × a
Weight Formula W=mg
Pressure Formula P=F/A
Ohm’s Law Formula V= I × R
Kinetic Energy Formula E = ½ mv²
Frequency Formula F =v/λ
Pendulum Formula T = 2π√L/g
Fahrenheit Formula F = (9/5× °C) + 32
Work Formula W = F × d × cosθ
Torque Formula T = F × r × sinθ
Displacement Formula ΔX = Xf–Xi 
Mass Formula F = m × a or m = F/m
Amplitude Formula x = A sin (ωt + ϕ)  
Tension Formula T= mg+ma
Surface Charge Density Formula σ = q / A
Linear Speed Formula V(linear speed) = ΔS/ΔT
Position Formula Δx=x2−x1
Heat of Fusion Formula q = m × ΔHF
Gravity Formula F α m₁m₂/r₂
Spring Potential Energy Formula P.E=1/2 k × x2
Physics Kinematics Formula v2=v2o+2a(x-xo)
DC Voltage Drop Formula V=I ×  R
Hubble’s Law Formula v = Ho r
Induced Voltage Formula e = – N(dΦB/dt)
Latent Heat Formula L = Q / M
Wavelength Formula λ = v/f
Gravitational Force Formula F = G(m1m2)/R2
Potential Energy Formula PE = mgh
Strain Energy Formula U = Fδ / 2
Friction Force Formula f = μN
Cell Potential Formula E0cell = E0red − E0oxid
Shear Modulus Formula (shear stress)/(shear strain) = (F/A)/(x/y
Water Pressure Formula Water pressure= ρ g h
Refractive Index Formula n = c/v
Centroid Formula C = [(x1 + x2 + x3)/ 3, (y1 + y2 + y3)/ 3]

Important Physics Formulas

Given below is the most important Physics formulae list:

  • Planck constant h = 6.63 × 10−34 J.s = 4.136 × 10-15 eV.s
  • Gravitation constant G = 6.67×10−11 m3 kg−1 s−2
  • Boltzmann constant k = 1.38 × 10−23 J/K
  • Molar gas constant R = 8.314 J/(mol K)
  • Avogadro’s number NA = 6.023 × 1023 mol−1
  • Charge of electron e = 1.602 × 10−19 C
  • Permittivity of vacuum 0 = 8.85 × 10−12 F/m
  • Coulomb constant 1/4πε0 = 8.9875517923(14) × 109 N m2/C2
  • Faraday constant F = 96485 C/mol
  • Mass of electron me = 9.1 × 10−31 kg
  • Mass of proton mp = 1.6726 × 10−27 kg
  • Mass of neutron mn = 1.6749 × 10−27 kg
  • Stefan-Boltzmann constant σ = 5.67 × 10−8 W/(m2 K4)
  • Rydberg constant R = 1.097 × 107 m−1
  • Bohr magneton µB = 9.27 × 10−24 J/T 
  • Bohr radius a0 = 0.529 × 10−10
  • Standard atmosphere atm = 1.01325 × 105 Pa 
  • Wien displacement constant b = 2.9 × 10−3 m K .
  • Wave = ∆x ∆t wave = average velocity ∆x = displacement ∆t = elapsed time.
  • Vavg = (vi + vf*)2

Vavg = The average velocity 

vi = initial velocity 

vf = final velocity

  • a = ∆v ∆t,

a = acceleration 

∆v = change in velocity 

∆t = elapsed time.

  • ∆x = vi∆t + 1/2 a(∆t)2

∆x = the displacement 

vi = the initial velocity 

∆t = the elapsed time 

a = the acceleration 

  • ∆x = vf∆t − 1/2 a(∆t)2

∆x = displacement 

vf = is the final velocity 

∆t = elapsed time

a = acceleration 

  • F = ma 

F = force 

m = mass 

a = acceleration

  • W = mg 

W = weight 

m = mass 

g = acceleration which is due to gravity.

  • f = µN 

f = friction force 

µ = coefficient of friction 

N = normal force 

  • p = mv
  • W = F d cos θ or W = F!d 

W = work t

F = force 

d = distance 

θ = angle between F and the direction of motion

  • KE  = 1/2 mv2 K

KE = kinetic energy

m = mass

v = velocity

  • PE = mgh 

PE = potential energy 

m = mass 

g = acceleration due to gravity 

h = height

  • W = ∆(KE) 

W = work done 

KE = kinetic energy. 

  • P = W ∆t 

P = power

W = work

∆t = elapsed time

Solved Examples

Q.1. Calculate the dc voltage drop if the circuit length is 500 cms and in it 10 A of current flows in 20 s ?


The DC voltage drop is given as : V=L×I/T

where, I = current through the circuit in Amperes.

L = Length of the circuit in metres

T = time for which the current has flowed through the circuit in seconds

V = Voltage in Volts.



V = 0.25 Volts.

Q.2. The spring constant of a stretched string is 50Nm−1 and displacement is 20 cm. Compute potential energy stored in the stretched string.


Given parameters are,


x = 20 cm = 0.2 m

Potential energy will be:


=½ X 50×(0.2)2

= 1 J

Q.3. A body moves along the x- axis according to the relation x=1–2t+3t2x=1–2t+3t2x = 1 – 2 t + 3t^{2}, where x is in metres and t is in seconds. Find the Acceleration of the body when t = 3s


We have,

x=1–2t+3t2x=1–2t+3t2x = 1 – 2 t + 3t^{2}then;

Velocity v= dx/dt= −2+6t

v= dx/dt= −2+6t

Acceleration:  v=dv/dt =6(m/s2)

Q.4. Calculate the weight of an object on the moon which weighs 50kg on earth.


Here weight = mass x gravitational acceleration

= m x g

= 50 kg x 1.6 m/s2

= 80 Kg m/s2

Q.5. Find the displacement covered by an object which accelerates from rest to 60 m/s in 3s. 


Initial velocity = 0 and final velocity = 60 m/s

Time taken = 3s

Therefore, acceleration = 60/3 = 20m/s2.

Displacement (S) = ut + ½ at2

= 90 m

Q.6. A person goes from Point A to Point B in 10s and returns back in 8s. If the distance between A and B is 36m, find the average speed of the person.


Here total distance covered = 72m

Total time taken = 18s

Therefore, average speed  = Total distance covered/Total time taken


Total distance covered total time taken=7218

= 4 m/s.

Q.7. If an object is moving with a velocity of 5 m/s and has a kinetic energy of 100J, Find its mass.


We know that KE = ½ mv2

100 = ½ x m x 5 x 5

100 = 25 m/2

m = 100×2/25 = 200/25

= 8 kg

Q.8. A long thin rod of length 50 cm has a total charge of 5 mC uniformly distributed over it. Find the linear charge density.


q = 5 mC = 5 × 10–3 C, l= 50 cm = 0.5 m. λ=?





Q.9. A car is travelling with a velocity of 10 m/s and it has a mass of 250 Kg. Compute its Kinetic energy?


As given here,

Mass of the body, m = 250 Kg,

Velocity of it, v = 10 m/s,

So Kinetic energy will be as:

E = 1/2mv^2

E = 1/2×250×10^2

= 125 ×100

E = 12500 joules

Q.10. The heat needed for a phase transfer of a 2 kg substance is Determine its latent heat.


Given parameters are,

Q = 400

M = 2 kg

The formula for latent heat is given by,

L = Q / M

L = 400 / 2

L = 200

Physics Formulas List 

Acceleration Formula Kinetic Friction Formula
Air Resistance Formula Latent Heat Formula
Amplitude Formula Latent Heat Of Fusion Formula
Amperes Law Formula Lattice Energy Formula
Angular Acceleration Formula Length Contraction Formula
Angular Displacement Formula Lens Makers Formula
Angular Momentum Formula Light Waves And Color Formula
Angular Speed Formula Lightning Formula
Angular Velocity Formula Linear Momentum Formula
Average Acceleration Formula Linear Speed Formula
Average Force Formula Lorentz Factor Formula
Average Speed Formula Magnetic Field In A Solenoid Formula
Average Velocity Formula Magnetic Declination Formula
Banking Of Road Formula Magnetic Field Strength Formula
Beam Deflection Formula Magnetism Formula
Beat Frequency Formula Magnetic Flux Formula
Bernoullis Equation Formula Mass Energy Formula
Brewsters Law Formula Mass Flow Rate Formula
Brownian Motion Formula Mass Formula
Buffer Solution Formula Maxwell Boltzmann Distribution Formula
Bulk Modulus Formula Maxwell Boltzmann Formula
Buoyancy Formula Measurement Formulas
Calorimetry Formula Mechanical Energy Formula
Capacitance Formula Mechanical Advantage Formula
Capacitive Reactance Formula Molar Concentration Formula
Cell Potential Formula Moment Formula
Centripetal Acceleration Formula Momentum And Its Conservation Formula
Centripetal Force Formula Momentum Formula
Charge Density Formula Momentum Of Photon Formula
Circular Velocity Formula Net Force Formula
Coefficient Of Static Friction Formula Newtons Second Law Formula
Combustion Formula Normal Force Formula
Conservation Of Energy Formula Orbital Speed Formula
Continuous Compound Interest Formula Optics Formula
Cop Formula Ohms Law Formula
Critical Angle Formula Orbital Velocity Formula
Critical Velocity Formula Oscillatory Motion Formula
Cylindrical Capacitor Formula Pascals Principle Formula
Current Density Formula Photon Energy Formula
Dc Voltage Drop Formula Planetary Formulas
De Broglie Wavelength Formula Poiseuilles Law Formula
Deceleration Formula Polarization Formula
Diffraction Grating Formula Position Formula
Displacement Formula Potential Energy Of A Spring Formula
Distance Speed Time Formula Potential Energy Formula
Distance Traveled Formula Power Factor Formula For Single Phase
Doppler Effect Formula Poynting Vector Formula
Doppler Shift Formula Power Formula
Drag Force Formula Pressure Drop Formula
Dynamic Viscosity Formula Pressure Formula
Efficiency Formula Projectile Motion Formula
Elastic Collision Formula Propagation Constant Formula
Electric Current Formula Radiant Energy Formula
Electric Flux Formula Radio Waves Formula
Electric Field Formula Refraction Formula
Elastic Potential Energy Formula Refractive Index Formula
Electric Power Formula Reflection And Ray Model Of Light Formula
Electricity Formulas Relative Motion Formula
Electrical Resistance Formula Relative Velocity Formula
EMF Formula Relativistic Doppler Effect Formula
Electrical Formulas Relativity Formula
Energy Density Formula Relativistic Mass Formula
Energy Consumption Formula Resistance Formula
Energy Level Formula Resistor Series Parallel Formula
Energy Momentum Formula Resonant Frequency Formula
Equivalent Resistance Formula Resistivity Formula
Escape Speed Formula Resultant Force Formula
Escape Velocity Formula Reynolds Number Formula
Flow Rate Formula Rotational Kinetic Energy Formula
Fluid Mechanics Formula Rotational Inertia Formula
Formula Dynamics Formula Shear Modulus Formula
Force Of Attraction Formula Simple Harmonic Motion Formula
Free Fall Formula Snells Law Formula
Friction Force Formula Soil Erosion Formula
Frequency Formula Sound Pressure Level Formula
Friction Loss Formula Sound Intensity Formula
Froude Number Formula Absolute Pressure Formula
Friction Formula Work Formula
Gay Lussac Law Formula Work Done By Gravity Formula
Gram Formula Mass Wind Energy Formula
Gravitational Acceleration Formula Weight Formula
Gravitational Force Formula Wavelength To Frequency Formula
Gravity Formula Wavelength Formula
Gross Profit Formula Wave Speed Formula
Gregory Newton Formula Wave Power Formula
Heat Capacity Formula Wave Energy Formula
Heat Conduction Formula Wave Formula
Heat Flux Formula Water Pressure Formula
Heat Gain Formula Wheatstone Bridge Formula
Heat Formula Voltage Drop Formula
Heat Index Formula Voltage Divider Formula
Heat Input Formula Velocity Formula
Heat Loss Formula Universal Gravitation Formula
Heat Of Fusion Formula Uniform Circular Motion Formula
Heat Of Hydration Formula Transformer Formula
Heat Of Reaction Formula Torque Formula
Heat Load Formula Time Constant Formula
Heat Of Solution Formula Time Dilation Formula
Heat Of Vaporization Formula Thermal Expansion Formula
Heat Rate Formula Thermal Energy Formula
Heat Release Rate Formula Tension Formula
Heat Transfer Formula Temperature Formula
Heisenberg Uncertainty Principle Formula Terminal Velocity Formula
Horsepower Formula Tangential Velocity Formula
Hookes Law Formula Tangential Acceleration Formula
Hubbles Law Formula Surface Tension Formula
Impulse Formula Surface Charge Density Formula
Induced Voltage Formula Superposition Formula
Inductive Reactance Formula Stress Formula
Inductance Formula Strain Formula
Inelastic Collision Formula Strain Energy Formula
Initial Velocity Formula Stopping Distance Formula
Instantaneous Rate Of Change Formula Static Friction Formula
Instantaneous Velocity Formula Static Electricity Formula
Instantaneous Speed Formula Spring Force Formula
Intensity Formula Spring Constant Formula
Internal Resistance Formula Spherical Capacitor Formula
Inverse Square Law Formula Speed Of Sound Formula
Kinematic Viscosity Formula Specific Heat Formula
Kinetic Energy Formula Speed Distance Time Formula
Kinematics Formulas Specific Gravity Formula
Kelvin To Celsius Formula Special Theory Of Relativity Formula

FAQs (Frequently Asked Questions)

1. Can I memorise Physics formulas faster?

Just like Mathematics, the subject of Physics requires practice when it comes to the application of formulas. You can also check out the Physics formula list on this website for quick learning.

2. Where can I find the important formulas of Physics?

The list of all physics formulas can be found here on the official website of Extramarks.

3. Is Physics a hard subject?

Physics is one of the most interesting subjects. Whether it is hard or not depends upon your approach towards the subject. In general, the theories and formulas might seem a little tricky but with consistent practice and application, Physics can be aced easily.