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1. |
Resistance of a 200 meter long cooper wire is equal to 20 ohm. Its diameter is 0.44mm. Its specific resistance in ohm-m is equal to ? |
A. | 1.520 * 10<sup>-8</sup> |
B. | 1.520 * 10<sup>-7</sup> |
C. | 1.520 * 10<sup>-6</sup> |
D. | 1.520 * 10<sup>-5</sup> |
Answer» B. 1.520 * 10<sup>-7</sup> | |