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One copper wire having resistivity 1.7 x...

One copper wire having resistivity 1.7 `xx 10^(-8) Omega,` density `8.9 xx 10^(3) kgm^(-3)`, atomic weight 63.5 g `mol^(-1)` , length 0.1 m and cross-sectional area ` 10^(-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

Text Solution

Verified by Experts

(i) `V = 1.7 xx 10^(-3) `V
(ii) `V_(d) = 7.4 xx 10^(-5) ` m/s
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Knowledge Check

  • Cross-sectional area of proton beam having electric current 1 mu A is 0.5 mm^(2) and move with velocity 3 xx 10^(4) m/s so current density = .........

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