Define resistivity. State its SI unit. On what factors resistivity dep

1.	Define resistivity. State its SI unit. On what factors resistivity depends? Write resistivity range for metals and insulators.
Answer» Resistivity (ρ): It can be defined as the resistance of a conducting material per unit length with unit area of cross- section. Its SI unit is ohm-metre (Ωm). The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size. Range of resistivity for metals = 10^-8 – 10^-6 Ωm For insulators = 10¹² - 10²⁰Ωm

Define resistivity. State its SI unit. On what factors resistivity depends? Write resistivity range for metals and insulators.

Answer»

Resistivity (ρ): It can be defined as the resistance of a conducting material per unit length with unit area of cross- section.

Its SI unit is ohm-metre (Ωm).

The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size.

Range of resistivity for metals = 10^-8 – 10^-6 Ωm

For insulators = 10¹² - 10²⁰Ωm

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Define resistivity. State its SI unit. On what factors resistivity depends? Write resistivity range for metals and insulators.

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