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CBSE Class 10 Answered

if the resistance of the wire of length 1 m is 26 ohm at 20 degree . if the diameter of the wire is 0.3 mm what be the resistivity of the metal at that temp. ?
Asked by vikramsingh | 24 Apr, 2013, 12:44: PM
answered-by-expert Expert Answer
We shall work on this problem using the formula that relates resistance (R), resistivity (?), length (l) and cross-sectional area (A) of the conductor.
 
The relation is,

We are given,

Answered by | 24 Apr, 2013, 02:55: PM

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