Basic Physics Formulas & Notes for Competitive Exams

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Basic Physics Formulas

Do you ever think about why the sky is blue or how the gravity works? Physics essentially studies how the fundamental constituents of our universe interact. Comprising an imperative part of the syllabus for many competitive exams organised for admission into engineering and technical programmes, this discipline constitutes a varied range of sub-fields ranging from quantum physics to nuclear physics. This blog aims to provide you with a comprehensive list of basic Physics formulas that you must know to ace your chosen competitive exam.

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List of Basic Physics Formulas

  1. Average Speed Formula

Using this Physics formula, we can calculate the average speed (S) of a moving body for the distance covered (D) as well as the time duration (T).

Average Speed Formula
Average Speed Formula
  1. Density Formula 

This formula depicts the denseness of material in a specific given area.

Density Formula
Density Formula 
  1. Acceleration Formula

Acceleration is the rate of change velocity with respect to the change in time. 

Acceleration Formula
Acceleration Formula
  1. Power Formula

The capacity to perform an activity is known as Energy. On the other hand, energy spent in carrying out an activity (work) for a particular period of time is termed as Power.

Power Formula
Power Formula
  1. Pressure Formula 

The amount of force applied per unit of an area is referred to as the pressure of an object. 

Pressure Formula
Pressure Formula 
  1. Ohm’s Law Formula

Amongst the popular Physics formulas, the Ohm’s Law is explained as the current (I) passing through some conductor material is directly proportional to the potential difference (V) between the two endpoints of the conductor.

Ohm’s Law Formula
Ohm’s Law Formula

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Basic Physics Notes

To crack any competitive exam, familiarizing oneself with the syllabus and exam pattern is of paramount importance. Considering the vast number of applicants every year, one cannot deny the fact that, to grab a tantalizing score you must learn the intricacies on your tips. Often, the important concepts are prepared by everyone but what fetches the extra marks there is the knowledge of the minute concepts of the subjects. While you must strengthen your basic Physics formulas, it is also imperative to go through the fundamental concepts under this subject. To help you strengthen the varied Physics concepts, we have explained some of the frequently asked topics under this discipline. 

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SI Units

Questions regarding the SI unit are frequently asked in many engineering exams. Here are the key pointers you must remember under SI units along with the basic physics formulas mentioned above. SI units as a concept are given less importance but they hold a very significant presence in questions papers of various exams. Following are some of the important SI you must remember and apply in your basic physics formulas.

Name of the Quantity SI Unit  Name of the Unit 
Mass  Kilogram  Kg
Time  Second s
Length  Metre 
Thermodynamic/ Temperature   Kelvin  K
Electric Current  Ampere  A
Luminous  Candela  Cd
Amount of Substance  Mole  Mole
Electric Resistance  Ohm  Ω
Power  Watt W
Wavelength of Light  Angstrom  Å
Magnetic Induction  Gauss Gs
Electric Charge   Coulomb  C
Atmospheric Pressure  Bar bar
Energy  Joule J
Magnetic Flux Maxwell  Mx
Pressure  Pascal Pa
Force  Newton  N

Important Instruments and Devices 

Most of are only aware of common devices or instruments used in various experiments of physics. These instruments can be incorporated in varied questions to evaluate a student’s understanding of basic physics concepts and formulas. Take a look at the following which enlists these instruments and devices as well as their simplified definitions.

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Instruments  Functions 
Speedometer  A device used to measure and display the speed of a vehicle.
Accelerometer   It is a device that measures acceleration.
Dynamometer  Usually, this device is used for measuring the torque, force
as well as the power of a body.
Anemometer  Through this device, we can measure the speed of the wind.
Galvanometer  It is an electromechanical instrument which is utilised for detecting
and indicating the electric current.
Barometer   A barometer is a scientific instrument which has its application in
meteorology and is used to calculate the atmospheric pressure.
Viscometer  Through this device, we can calculate the viscosity of a fluid.
Seismometer  This instrument helps in assessing and measuring the random
motions inside the earth’s crust caused by an earthquake or
volcanic eruption etc. 
Voltmeter  By using a voltmeter, we can measure the electrical potential
difference between two given points 

Thus, we hope that this blog has equipped with the basic physics formulas and concepts you must know while preparing for competitive exams. If you are gearing up for competitive exams like GRE and GMAT, book an online demo session with our Leverage Edu experts and we will guide you through your preparations, providing you with the best study material and exam day tips to crack your exam with flying colours!

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