
What is the sign of conductivity?
Answer
424.8k+ views
Hint: Every electronic device we use has a channel that allows current to flow through it. In addition, electric conductivity is a measure of a conductor's capacity to conduct electricity. Furthermore, in this question, you will learn about the definition of conductivity, the sign of conductivity, its formula.
Complete answer:
The reciprocal of electrical resistivity is electrical conductivity.
Electrical conductivity is commonly represented by the Greek letter (sigma), but other symbols such as (gamma) and (kappa) are also used.
Additional information:
Conductivity:
The measure of how an electric current journey within a substance is referred to as its conductivity. Furthermore, the higher the current density for a given applied potential difference, the greater the electrical conductivity within the material.
In layman's terms, electrical conductivity is a substance's capacity to conduct electricity. Also, the electrical conductance or conductivity of a material is crucial since some substances must conduct electricity while others do not.
For example, wire conductors must allow current to flow as freely as feasible. While other minerals, like the resistor, are necessary to regulate the passage of current.
Other materials, on the other hand, such as insulators, are not necessary to carry electricity.
The formula for conductivity:
The resistivity formula is the inverse of the conductivity formula.
Here,
-Electrical conductivity
- resistivity
Note: A material's conductivity fluctuates with temperature, but it can also vary depending on the strength of an applied magnetic field. So far, we've assumed that all materials are homogeneous and isotropic; homogeneous means that a material's properties are the same regardless of where a sample is collected, and isotropic means that these qualities have the same value regardless of which direction they are measured in. However, this is not always the case, specifically in the case of semiconductors, which found the most suitable materials with varying conductivities in different directions. Furthermore, conductance and resistance should not be confused with conductivity and resistivity. Although they are related, they are not the same and cannot interchange. Conductance and resistance fluctuate with the size of the material, although conductivity and resistivity do not.
Complete answer:
The reciprocal of electrical resistivity is electrical conductivity.
Electrical conductivity is commonly represented by the Greek letter
Additional information:
Conductivity:
The measure of how an electric current journey within a substance is referred to as its conductivity. Furthermore, the higher the current density for a given applied potential difference, the greater the electrical conductivity within the material.
In layman's terms, electrical conductivity is a substance's capacity to conduct electricity. Also, the electrical conductance or conductivity of a material is crucial since some substances must conduct electricity while others do not.
For example, wire conductors must allow current to flow as freely as feasible. While other minerals, like the resistor, are necessary to regulate the passage of current.
Other materials, on the other hand, such as insulators, are not necessary to carry electricity.
The formula for conductivity:
The resistivity formula is the inverse of the conductivity formula.
Here,
Note: A material's conductivity fluctuates with temperature, but it can also vary depending on the strength of an applied magnetic field. So far, we've assumed that all materials are homogeneous and isotropic; homogeneous means that a material's properties are the same regardless of where a sample is collected, and isotropic means that these qualities have the same value regardless of which direction they are measured in. However, this is not always the case, specifically in the case of semiconductors, which found the most suitable materials with varying conductivities in different directions. Furthermore, conductance and resistance should not be confused with conductivity and resistivity. Although they are related, they are not the same and cannot interchange. Conductance and resistance fluctuate with the size of the material, although conductivity and resistivity do not.
Latest Vedantu courses for you
Grade 9 | CBSE | SCHOOL | English
Vedantu 9 CBSE Pro Course - (2025-26)
School Full course for CBSE students
₹37,300 per year
Recently Updated Pages
Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Which are the Top 10 Largest Countries of the World?

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Derive an expression for electric potential at point class 12 physics CBSE

Who discovered the cell and how class 12 biology CBSE
