Question

definition of resistivity and obtained its expressions​

Answer 1

Answer:

Resistivity of a substance is the resistance offered by a conducting wire of unit length and unit cross sectional area.

p = R. A/l

Its SI unit is ohm meter.

Answer 2

Answer:

Residtivity is the property of conductor which opposes or stop the flow of electric current in the electricity conducting wire.

Its SI unit is Ohm (Π).

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