Hello, friends, I hope you all are doing great. In today’s tutorial, we will discuss the Difference Between Resistance & Resistivity. The basic difference between resistance and resistivity is that resistance restricts the movement of current and resistivity is a feature of substance that discuss the resistance offered by the substance with certain dimensions.
In today’s post, we will have a detailed look at both resistance and resistivity and compare them to find their differences. So let’s get started with the Difference Between Resistance & Resistivity.
Difference Between Resistance & Resistivity
Resistance
- The feature of material due to that it creates a hindrance to the movement of current.
- The formula of resistance is R=ΡL/α.
- The resistance is a term used in the electrical system to explain the opposition that occurs in the flow of current
- Its measuring unit is ohm denoted with omega
- By using the relation among the three terms volts, current, and resistance ohm law was explained. That says V=IR
- The substance that offers the less value of resistance to flow current is called a conductor and that offers a high value of resistance is called the insulator
- High resistance less current flow low resistance high current will flow
- V=IR
- A large portion of any substance defines the resistance offered by that material
- Rubber has less high resistance since it does not have free electrons
- The size and shape of the substance also define the resistance offered.
- If the area of the conductor is less and the length is high it has a large resistance.
- Such a substance that has a 0 value of resistance called a superconductor
- The system’s international unit of resistance is the ohm,
- It is denoted with the R. The main elements that affect the resistance are the length of the conductor, the cross-section area of the conductor, and temperature.
Resistivity
- The resistance offered by the one-meter cube of material is called resistivity.
- Its formula is Ρ=αR/L.
- α is an area of the conductor.
- R is a resistance of substance.
- L is the length of the material.
- Resistivity is called volume resistivity is the resistance offered by the one-meter cube of substance.
- Its inverse is known as conductivity.
- A lower value of resistivity indicates current can pass through a substance
- Resistivity is denoted by a letter called rho.
- Its SI unit is an ohm meter.
Parameters Affecting Resistance
- The common parameters that affect the resistance are given here.
- If the length of the conductor increases with resistance increases.
- If an area of conductor increases resistance decreases.
- The material also affects the resistance.
- Temperature also affects resistance.
What is the difference between resistance and resistivity?
- Resistance is a property of material since it hinders current flow or electron flow. Resistivity is the physical property of certain materials.
What is resistivity in simple words?
- It features materials that define the ability of a material to hinder current flow in it. It is a material property that is based on temperature and also on pressure.
Are specific resistance and resistivity the same?
- Specific resistance is also called resistivity is a material property that explains how much material can affect current flow. resistivity unit is ohm-meter and denoted ⍴
Why is resistivity used instead of resistance?
- Resistance value based on resistivity. Resistivity is the property of a material that helps to make wire or another component. While resistance is a feature of wire.
Which material is the best conductor?
- The good conductor material is pure silver metal. It has a larger number of free electrons that cause the current flow.
Can resistivity be equal to resistance?
- Resistance is equal to the multiple of resistivity (rho) and Length (L), divided by the cross-sectional Area (A) where the current flows. If length to width ratio is 1, resistance is equal to resistivity
Can we use copper wire instead of nichrome?
- Copper has low resistance and a high temperature coefficient it is not used in meter bridges.
Which one is more fundamental, resistance or resistivity?
- Resistivity is material features for opposing current flow while resistance is based on some factors like length, material type, and A area. Resistivity is constant for any material.
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That is a detailed post about the difference between resistance and resistivity if you have any query ask in comments. Thanks for reading. Have a good day.