What is the difference between resistance and resistivity in terms of definition ?

i.e. resistance is defined as the property of conductor due to which it opposes the flow of electric current through it.

Then how can we define resistivity in a similar way ?

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Solution

Resistance is the obstruction offered to the flow of current by a conductor.
Resistivity is the obstruction offered to the flow of current by UNIT AREA OF the conductor.

So basically, resistance is the property of the object (say a copper wire), whereas resistivity is the property of the substance (copper).

And so resistance depends upon the properties of the object.
Whereas resistivity depends upon the properties of the metal.

So for example take two objects A and B made of aluminium. Both are of a different size.
The resistance of A & B will be different.
But the resistivity will be the same.

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Similar questions

Q. When electric current is passed through conductor i.e. generates heat due to resistance it offers to current flow. What this phenomena known as :

Write an expression for the electrical power spent in flow of current through a conductor in terms of (a) resistance and potential difference (b) current and resistance.

Q. The property of an electrical component to resist the flow of electric current is termed as electrical resistance.

When resistances are connected in series, then the current through the circuit remains same. If we take two resistances R1( more) and R2( less resistance), then there will be more obstruction offered to the flow of electrons in R1 than R2 i.e., the electrons will move more easily in R1 and thus faster in R1 ( due to less collisions) and thus the rate of flow of electrons will be more i.e., more current ( which is defined as the rate of flow of charge ) will flow. Then should the current glowing through the different resistanced in series be different ?

Q. (a) On which factors does the resistance of a conductor depend? Define resistivity and state its SI unit.
(b) Give the value of total resistance and total current flowing in the given circuit.

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What is the difference between resistance and resistivity in terms of definition ? i.e. resistance is defined as the property of conductor due to which it opposes the flow of electric current through it. Then how can we define resistivity in a similar way ?

What is the difference between resistance and resistivity in terms of definition ?

i.e. resistance is defined as the property of conductor due to which it opposes the flow of electric current through it.

Then how can we define resistivity in a similar way ?