The dimension of a block is 100m×1 m× 1 m . The specific resistance of the material of the block is 4×10^-6 ohm meter. Calculate its resistance across its rectangularfaces.
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Relation between R, \rho, l, A is R=\rho \frac{l}{A} .
Here, \rho = (3)10^{7} ohm-m, l=10^{-2} m and A=10^{-2}m^{2}.
Substituting the above values, R=(3)10^{7} ohm.
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