Question

what is resistivity ? write different between resistance and resistivity ?

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Answer 1

Answer:

Resistance

1) Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons.

2) Resistance is directly proportional to the length and temperature while it is inversely proportional to the cross-sectional area of the material.

3) The SI unit of resistance is Ohms.

Resistivity

1) Resistivity is the physical property of a particular substance which is having particular dimensions.

2) Resistivity is only proportional to the nature and temperature of the particular material.

3) The SI unit of resistivity is Ohms-meter.

Answer 2

Resistivity:-

Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction.

Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction.Resistivity may also be referred to as the specific electrical resistance, or volume resistivity, although these terms are less widely used.

Difference between resistance and resistivity :-

Resistance:-

1. It is the opposition to the flow of electric current through a conductor.
2. Its SI unit is ohm ( Ω ).
3. It depends upon the length and area of the cross-section of the wire.

Resistivity:-

1. It is the resistance of a meter cube of a wire.
2. Its SI unit is ohm-meter (Ω-m).
3. It does not depend upon the length and area of the cross-section of the wire