the resistance of a wire of length 15.7 metre and the radius 0.5 millimetre is 10 ohm find the resistivity of the material of the wire?? please answer me quickly
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Answer:
5×10^-7
Explanation:
- resistance equals product of resistivity and length divided by cross sectional area
- therefore resistivity equals resistance×area divided by length
- by changing in SI units
- 10×3.14×0.5\1000×0.5\1000×1\15.7
- =5×10^-7
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