Resistance and resistivity difference in a tabular form
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Resistance and Resistivity. Electric resistance is measured in ohms: 1 volt 1 ohm = --------- 1 amp; The resistance of a wire or rod to the flow of electric current depends both on its geometry and its composition. Wires with large cross- sections .
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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.
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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