Question

# On what factor does the resistance of a material depend? Define resistivity.

Solution

## $$\rho ={{\rho }_{o}}(1-\alpha \Delta T)$$,  $$where,$$ $$\rho =resitivity$$ $$T=\,temperature$$ $$\alpha =\text{constant}$$ Hence, resistivity depends on temperature.Defination: Resistivity is measure of the resisting power of a specified material to the flow of an electric current.Physics

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