a metal rod of length 1.5 CM has square cross section of side 20 millimetre what is his resistance if resistivity is 2.75 *10^-6 ohm cm
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lenght of the metal rod =l=1.5 cm
area of cross section =20mm=2 cm
p(rho)=2.75*10^-6
R=p*l/a
R=2.75*10^-6*1.5/2
R=2.06*10^12
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