Resistance and Resistivity
Q1: What is Resistance?
Answer:
Resistance is the physical property of the material to resist the flow of electricity passing through it when an external voltage is applied.
Q2: What is Resistivity?
Answer:
Electrical resistivity of the intrinsic property of the material and is a measure of how strongly the material can resist the flow of current through it.
Q3: How are Resistance and Resistivity related?
Answer:
Resistance and resistivity are related by the formula which is given by:
R = ρl/A
Where,
- R is the resistance of the conductor,
- l is the length of the conductor,
- A is the cross-sectional area of the conductor, and
- ρ is the proportionality constant which represents resistivity.
Q4: What is the Difference between Resistance and Resistivity?
Answer:
The key difference between resistance and resistivity is that resistance is the physical property of the material i.e., it depends on the physical things like dimensions of the material. On the other side resistivity is the intrinsic property i.e., it is the inherent property of the substance and doesn’t depend on physical factors.
Q5: What is SI unit of Electrical Resistivity?
Answer:
The SI unit of Electrical Resistivity is Ω-m.
Resistivity
Resistance is the physical property of the material which opposes the current flow in the circuit whereas resistivity is the intrinsic property that helps us understand the relation between the dimension of the substance and the resistance offered by it.
In this article, we will learn about Resistance, Resistivity, how resistance and resistivity are related to each other, the difference between resistance and resistivity, and others in detail.
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