Chapter : 1. Electricity
Resistivity
Resistivity
So,
or
...(i)
where ρ (rho) is called resistivity of the material of conductor.
यदि, l = 1 m और a = 1 m2
तब R = ρ ...(ii)
Thus, if we take 1 metre long piece of a substance having a cross-sectional area of 1 meter2, then the resistance of that piece of the substance is called its resistivity.
Resistivity of a substance can also be defined as follows :
The resistance offered by a cube of a substance having side of 1 metre, when current flows perpendicular to the opposite faces, is called its resistivity.
Units of Resistivity
From equation (i), we can write
So, SI unit of resistivity (ρ)
=
= ohm.m
Thus, the SI unit of resistivity is ohm. m (or Ω .m).
So,
or
...(i) where ρ (rho) is called resistivity of the material of conductor.
यदि, l = 1 m और a = 1 m2
तब R = ρ ...(ii)
Thus, if we take 1 metre long piece of a substance having a cross-sectional area of 1 meter2, then the resistance of that piece of the substance is called its resistivity.
Resistivity of a substance can also be defined as follows :
The resistance offered by a cube of a substance having side of 1 metre, when current flows perpendicular to the opposite faces, is called its resistivity.
Units of Resistivity
From equation (i), we can write
So, SI unit of resistivity (ρ)
=
= ohm.m Thus, the SI unit of resistivity is ohm. m (or Ω .m).
Trending Articles & Blogs
- Physics Tutor, Math Tutor Improve Your Child’s Knowledge
- How to Get Maximum Marks in Examination Preparation Strategy by Dr. Mukesh Shrimali
- 5 Important Tips To Personal Development Apply In Your Daily Life
- Breaking the Barriers Between High School and Higher Education
- 14 Vocational courses after class 12th
- Tips to Get Maximum Marks in Physics Examination
- Get Full Marks in Biology Class 12 CBSE
Download Old Sample Papers For Class X & XII
Download Practical Solutions of Chemistry and Physics for Class 12 with Solutions
Recent Questions Asked
- Newton’s laws of motion asked by Dr. Mukesh Shrimali
- Process of nutrition in Amoeba asked by Rajiv Sharma
- Importance of studying physics subject in school after 10th asked by Rajiv
- Refraction Through Prism in Different Medium asked by Kirti Sharma
- Ratio and Proportion Question asked by Education Desk
- Explain all the 12 tenses with example asked by Qwerty
- Refraction Through Prism in Different Medium asked by Seema Shrimali