What is difference between resistance and restivity
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Heya here you go ⬇️⬇️⬇️⬇️
The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it : R=V/I (following Ohm’s law)
The resistance is measured in Ohms Ω (Volt/ampere)
The electrical resistance of a wire would be expected to be greater for a longer wire, less for a wire of larger cross sectional area, and would be expected to depend upon the material out of which the wire is made. Experimentally, the dependence upon these properties is a straightforward one for a wide range of conditions, and the resistance of a wire can be expressed as
R=Pl/A (P=resistivity)
Whereas,The factor in the resistance which takes into account the nature of the material is the resistivity . Although it is temperature dependent, it can be used at a given temperature to calculate the resistance of a wire of given geometry.
It is also said as the tendency of providing obstruction in the path of the flow of charge.
Hope it helps ^_^
The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it : R=V/I (following Ohm’s law)
The resistance is measured in Ohms Ω (Volt/ampere)
The electrical resistance of a wire would be expected to be greater for a longer wire, less for a wire of larger cross sectional area, and would be expected to depend upon the material out of which the wire is made. Experimentally, the dependence upon these properties is a straightforward one for a wide range of conditions, and the resistance of a wire can be expressed as
R=Pl/A (P=resistivity)
Whereas,The factor in the resistance which takes into account the nature of the material is the resistivity . Although it is temperature dependent, it can be used at a given temperature to calculate the resistance of a wire of given geometry.
It is also said as the tendency of providing obstruction in the path of the flow of charge.
Hope it helps ^_^
originaljustice:
nonsenee
why so??
reason kya h nonsense ka can you tell me
whete is resistivity
Answered by
0
resistance is amount of force by which it resist the flow of charge through it denoted by R
resistivity is tendency of a material to resist the flow of charge it is denoted by ro
relation bw resistance and resistivity :
R=ro×l/A
resistivity is tendency of a material to resist the flow of charge it is denoted by ro
relation bw resistance and resistivity :
R=ro×l/A
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