A 10-gauge copper wire has a cross-sectional area A = 5.26 mm2 and carries a current of I = 5.00 A . The density of copper is ρ = 89.50 g/cm3 . One mole of copper atoms (6.02 × 1023 atoms) has a mass of approximately 63.50 g. What is the magnitude of the drift velocity of the electrons, assuming that each copper atom contributes one free electron to the current?

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A:

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A: (a) Expression for drift speed of electrons vd=InqA=Inqπr2=2.60 A8.46×1028 electronsm1.602×10-19…

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Q: An aluminum wire having a cross-sectional area of 3.90 x 10-6 m² carries a current of 3.00 A. The…

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A:

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Q: A 270-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,210…

A: Time = 30.2207 year Or Time = 30.2 year (approximately)Explanation:

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A:

Q: A wire has a current density of 6.71 × 10° A/m². If the cross-sectional area of the wire is 1.03…

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A:

Q: An aluminum wire having a cross-sectional area equal to 3.30 x 10 m² carries a current of 4.50 A.…

A: Given Data :Current I = 4.5 AArea of cross section A = 3.3×10-6 m2Density of aluminum ρ = 2.7…

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.