Concept of Dimensional Analysis Physics

Dimensional analysis in Physics is a very essential tool. This Physics Lesson introduces with types of physical quantities, meaning of dimension, what is the importance of dimension, why do we learn dimensions etc. Its basic introductory video for learning dimensional Analysis.
There are two types of physical quantities -- Fundamental Quantities ( Primary) & Derived Quantities ( Secondary).
Those quantities which are independent completely are called Fundamental Quantities and there are seven fundamental quantities in our universe we have made for easy learning physics -- Mass, length, Time, Current, Intensity of Light, amount of substance & temperature.
There are special symbol & square bracket used for representing these fundamental quantities like --
[M] for mass
[L] for length
[T] for time
[A] for current
[Cd] for Candela, unit of intensity of light
[Mol] for amount of substance

To study dimensional analysis we take mass, length and time as fundamental quantities of every other derived physical quantity.

Derived Quantities in physics are those quantities which depend on fundamental quantities. For example velocity is a derived quantity because --

Velocity = distance / time, it involves fundamental quantities like distance (length) and time.

We have a method in physics writing these physical quantities in the form of M, L & T. And the power raised (exponent) to these fundamental quantities are called Dimensions.

[grandlong]

I wish my professor could explain as clear as you do. Thank you!

[ammarazafar]

this video gives me the answer what is dimension...for which i have searched a lot of videos..

[kavyadileep]

At first I was confused about this idea.I totaly mixed up every thing, like when to change metre into dimension I wrote [M].But after watching this I got all my doubts cleared.Thank you, now I know more about dimensional analysis.

[rimjhimdutta]

This video helped me and it cleared my concept of dimension regarding physical quantities

[Melbeneeeeeyy]

Nice class sir....it was very helpful to improve my studies....I searched alot of videos about dimension....but all classes is so lengthy and nothing concepts

[wfequiere]

Electrical current is not a primary quantity. Current is measured in Coulombs per second (electrical charge per second). Electrical charge is a primary quantity.

[kevinengosso]

Thanks u so much 🙂 u make me to understand Dimensions in less than 8min 🇨🇲

[NAGARAJKUMARranjitkrishna]

Distance is length and time is time XD... p.s nice video, was really helpful

[mavericksevon]

Thank you sir, I love your explanation

[MaiaraBela]

Very nice, helped me a lot :) Thanks!

[hike]

Finally when he showed the division it all made sense because my stupid 20 years of experience proffessor just said
put -1 as coefficient if you see division anywhere
WHERE THE HELL DO I THEN I PUT IT ???

[sanjaykumar-cqfg]

I really like your videos and kind of work thanks too much

[balasubramaniansellaiah]

Really helpful !! Awesome explanation 👌

[shanmugapriya]

Sir why are taking mass for derived speed formula speed formula is length × time so it come [L^1T^-1] why u add mass to the formula

[shikha]

what is the dimensional formula of electric current, intensity of light, temperature and amt of substance?

[roroparty]

I am trying to figure out where he got the -1 exponent for T

[ronitsinghpatel]

From which country you belong ??? Dear sir

[victorokoro]

nice video but please wok on your intonation, i kinda got confused at the beginning