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10 Nov 2019
The resistivity of gold is 2.44 à 10-8 ohm · m at a temperature of20°C. A gold wire, 0.5 mm in diameter and 44 cm long, carries acurrent of 380 ma. The number of electrons per second passingagiven cross section of the wire is closest to:
A) 6.3 Ã 10^15 B) 2.4 Ã 10^17 C) 1.2 Ã 10^22 D) 2.8 Ã 10^14 E) 2.4Ã 10^18
The resistivity of gold is 2.44 à 10-8 ohm · m at a temperature of20°C. A gold wire, 0.5 mm in diameter and 44 cm long, carries acurrent of 380 ma. The number of electrons per second passingagiven cross section of the wire is closest to:
A) 6.3 Ã 10^15 B) 2.4 Ã 10^17 C) 1.2 Ã 10^22 D) 2.8 Ã 10^14 E) 2.4Ã 10^18
Nestor RutherfordLv2
8 May 2019