Question

3. calculate the resistance per meter at a room temprature, of oalloy wire of diameter 1.25 mm. The resistivity of alloy is 5X 107 m. Also find out conductance and conductivity ?​

Answer 1

3. calculate the resistance per meter at a room temprature, of oalloy wire of diameter 1.25 mm. The resistivity of alloy is 5X 107 m. Also find out conductance and conductivity ?

Answer 2

Answer:

Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l

Therefore area = 3.14×(1.25×10^-3)^2/4. 4. Therefore Resistance = (resistivity×length)/area. =0.4 Ohm.

Explanation:

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