Question

Calculate the area of cross section of a wire of length 2m, its resistance is 25ohm and the resistivity of material of material of wire is 1.84Ã10.6ohm​

Answer 1

Hlo friend

The required answer is

Resistivity=(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^-7m^2

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