What's the difference between resistance and resistivity?

Question

Answer

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.

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.

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Resistance is defined as the property of the conductor which opposes the flow of electric current. Resistivity is defined as the resistance offered by the material per unit length for unit cross-section. ...

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The resistance of an object (i.e., a resistor ) depends on its shape and the material of which it is composed. Resistivity ρ is an intrinsic property of a material and directly proportional to the total resistance R, an extrinsic quantity that depends on the length and cross-sectional area of a resistor.

Answer

Property of material which oppose the flow of current called resistance while resistance of. specific area and length called resistivity

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Resistance depends on the length of the conductor, nature of the material and the area of cross section Resistivity depends on the nature of the conductor and temperature of the conductor but not on the shape and size of the conductor

Answer

Resistivity is that property of conductor due to which it offers resistance to the flow of current through it.

Answer

Understanding Resistance
Resistance is a measure of the opposition to the flow of electric current in a material. It is determined by several factors, including the material's properties, its length, and its cross-sectional area.

Definition: Resistance (R) is quantified in ohms (Ω).
Factors Influencing Resistance:
- Material type: Conductors have low resistance, while insulators have high resistance.
- Length: Longer conductors have higher resistance.
- Cross-sectional area: Thicker conductors have lower resistance.
Formula: Resistance is calculated using Ohm's Law: R = V/I, where V is voltage and I is current.

Understanding Resistivity
Resistivity is an intrinsic property of a material that quantifies how strongly it resists electric current. Unlike resistance, resistivity does not depend on the material's shape or size.

Definition: Resistivity (ρ) is expressed in ohm-meters (Ω·m).
Factors Influencing Resistivity:
- Material composition: Different materials have characteristic resistivities.
- Temperature: Resistivity typically increases with temperature for conductors.
Relationship to Resistance: Resistance can be derived from resistivity using the formula: R = ρ(L/A), where L is length and A is cross-sectional area.

Key Differences

Nature: Resistance is a measure of opposition in a specific object, while resistivity is a material property.
Dependence: Resistance depends on dimensions, while resistivity remains constant for a given material.
Units: Resistance is measured in ohms (Ω), and resistivity is measured in ohm-meters (Ω·m).

Understanding these concepts is crucial in fields like electronics and materials science.

Similar Class 10 Doubts

What is the difference between Resistance and Resistivity.?

Can anyone tell me the difference between resistivity and resistance?

What is the difference between resistivity and resistance?

what is the difference between resistance and resistivity

What is the difference between resistance and resistivity?

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