Question

.
wire is
is Im Long, O.2mm in diameter and has a resistance of 10 ohm. calculate the resistivity of this material

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Answer 1

Answer:

L = 1.0 m, D = 0.2 mm

, r = 0.2 /2 mm

= 0.2/2× 1000m = 1 × 10power -4 m

R = 10 ohm.

that,

10× 3.14×(1×10power- 4 )square/1.0

The answer is :.

{ 3.14 × 10 power -7 ohm m.}