B Dimensions of Electric resistance

1. Aug 24, 2015

Shivansh Mathur

Can I get the derivation of the dimensions of the physical quantity ELECTRIC RESISTANCE which is given by :-

A simple derivation is only required.

2. Aug 24, 2015

Qwertywerty

How have you tried approaching this ?

3. Aug 24, 2015

f95toli

That does not look right to me...
Are you sure that is supposed to be the unit of electrical resistance (i.e. the ohm) expressed in SI base units?

4. Aug 25, 2015

Shivansh Mathur

I am so sorry!
This is not the correct formula. The correct one is this-

Now can i get to know how we have arrived at this?
I saw this question in a competitive exam. I'm a student of class 10 with very basic knowledge in the subject. However, i know that this equation basically gives us the relation between resistance and various properties of the conductor.

5. Aug 25, 2015

SteamKing

Staff Emeritus

R - resistance in Ohms
V - voltage
I - current

If you look up the derived units for voltage and current, applying Ohm's Law will give you the basic units for Ohms.

6. Aug 26, 2015

Shivansh Mathur

Ok i got a better way to do it. Have studied about the SI units and the derived units.
It has automatically taken me to the answer.
Thank you.

7. Apr 17, 2016

SASANKA

V=iR
R=V/i=w/Qi=w/it.t=ML2T-2/I2T=ML2T-3I-2

8. Apr 17, 2016