What is the difference between resistance and resistivity?

Question

Answer

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.

Answer

Resistance has tenses(which are in English),resistivity has activities on tenses

Answer

Resistance:

Resistance is a fundamental concept in physics that refers to the opposition offered by a material to the flow of electric current. It is a property of a specific object or component and is measured in ohms (Ω). Resistance is dependent on various factors, such as the length, cross-sectional area, and material of the conductor.

Resistivity:

Resistivity, on the other hand, is a characteristic property of a material that determines its inherent ability to resist the flow of electric current. It is denoted by the symbol ρ (rho) and is measured in ohm-meters (Ω·m). Resistivity is an intrinsic property of a material and is not affected by the shape or size of the object.

Differences:

1. Definition:
- Resistance: Resistance is the measure of opposition to the flow of current in a specific object or component.
- Resistivity: Resistivity is the inherent property of a material that determines its ability to resist the flow of electric current.

2. Dependence:
- Resistance: Resistance depends on factors such as the length, cross-sectional area, and material of the conductor.
- Resistivity: Resistivity is an intrinsic property of a material and is not influenced by the shape or size of the object.

3. Measurement:
- Resistance: Resistance is measured in ohms (Ω) using an ohmmeter or multimeter.
- Resistivity: Resistivity is measured in ohm-meters (Ω·m) using specialized instruments.

4. Units:
- Resistance: The unit of resistance is the ohm (Ω).
- Resistivity: The unit of resistivity is the ohm-meter (Ω·m).

5. Application:
- Resistance: Resistance is used to determine the amount of current flowing through a specific component or device.
- Resistivity: Resistivity is used to compare and classify different materials based on their ability to conduct or resist electric current.

6. Relationship:
- Resistance: Resistance is directly proportional to the length of the conductor and inversely proportional to its cross-sectional area.
- Resistivity: Resistivity is an inherent property of a material and remains constant regardless of the size or shape of the object.

In summary, resistance is a measure of the opposition to the flow of current in a specific object, while resistivity is an intrinsic property of a material that determines its ability to resist the flow of electric current. Resistance depends on various factors, while resistivity is independent of the shape or size of the object.

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