Question 14:
(a) What do you understand by the “resistivity” of a substance ?
A wire is 1.0 m long, 0.2 mm in diameter and has a resistance of 10 Ω. Calculate the resistivity of its material ?
Lakhmir Singh Physics Class 10
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Resistivity or specific resistance of a body is a characteristic by which one can judge the electrical property of a substance. ... Resistivity quantifies how strongly a material opposes the flow of electrons through it. If a material has low resistivity, it means it offers less resistance to the electric current.
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