Calculate the area of cross section of a wire of length 2m, its resistance is 25Ω and the resistivity of material of wire is 1.84*10-6 Ωm.
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Answer:
resistance = (resistivity*length)/area
25 = (1.84*10^-6*2)/area
area = (3.68*10^-6)/25
area = (0.736*10^-6)/5
area = 0.1472*10^-6
area = 1.472*10^-7 m^2
Explanation:
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