What is the resistance of a conductor with a length of 1 meter and a cross-section of 4 mm, made of aluminum?

To find the resistance of the specified aluminum conductor, you must use the formula: R = ρa * l / S.

Constants and variables: ρa – beats. electrical resistance of aluminum (at a temperature of 20 ºС ρa = 0.028 Ohm * mm2 / m); l is the length of the specified conductor (l = 1 m); S – cross-sectional area (S = 4 mm2).

Calculation: R = ρa * l / S = 0.028 * 1/4 = 0.007 Ohm = 7 mOhm.

Answer: The resistance of the specified aluminum conductor is 7 mΩ.

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