similarities between resistance and resistivity
Answers
Resistance is the term which is the resisting of flowing of charges from a specific substance of any size.
Consider we have a solid substance of copper. It will have a resisting of charges from flowing through the substance.
If we change its length and area provided to drift of charge, its resistance will vary.
But the one thing that will constant for all copper substance of any shape and size is resistivity. The resistance of a substance of copper , iron , germanium will vary if we change the shape and size of that substance, but its resistivity is constant at any shape and size.
Resistivity is different in copper,Iron etc because of their nature,but if we change the shape,only resistance will change.
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Resistivity is like the density of a material that is constant and resistance is like the mass which will depend on the length area or (volume) of substance.
☺ａｎｓｗｅｒ:
⭕️Resistivity is also known as electrical resistivity.
⭕️Its a property that quantities how strongly a material opposes the flow of electric current.
⭕️A low resistivity indicates a material that allows the flow of electric current.
⭕️Its SI unit is ohm (symbol - Ω).
⭕️It's named after German physicist Georg Simon Ohm.
⭕️Resistivity of a conductor is a property of the material of the conductor.
⭕️ Unit of resistivity is Ohm meter, Ω m.
⭕️Resistivity of the material of the conductor changes with temperature.
⭕️Resistivity of copper is 1.7 × 10 -8 Ω m at room temperature.
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