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One copper wire having resistivity 1.7 xx 10^(-8) Omega, density 8.9 xx 10^(3) kgm^(-3), atomic weight 63.5g mol^(-1) , length 0.1 m and cross-sectional area10^(-6) m^(2)carries 1 A electric current. Find (i) potential difference across the wire (ii) drift velocity of free electron. (Avogadro number = 6.02 xx 10^(23) " mol"^(-1)and valency of copper - 1 |
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Answer» SOLUTION :(i) `V = 1.7 xx 10^(-3) `V (II) `V_(d) = 7.4 xx 10^(-5) ` m/s |
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