what is resistivity explain it
Answers
Answer:
Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction. ... Materials that conduct electrical current easily are called conductors and have a low resistivity.
Resistivity or specific resistance of a body is a characteristic by which one can judge the electrical property of a substance. As the name suggests, resistivity is associated with the resistance to electrical flow of electrons. Resistivity quantifies how strongly a material opposes the flow of electrons through it.
If a material has low resistivity, it means it offers less resistance to the electric current. This implies that a material with low resistivity has highly conductive. For example, Silver!
In terms of definition, resistivity is defined as the resistance of a of a material of unit cross section and unit length.
We know that resistance can be written as:
R = ρ L/A
Where ρ is a the resistivity of the substance.
This clearly means that.. resistivity of a substance is moreover same for any length or cross section area, whereas the resistance can vary!
Therefore resistivity is an intrinsic property of a material!
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