busbar made out of copper has a length of 12 inches. Its surface dimension is 1 cm by 1 cm. If the material has free electron of 10^24 per cubic meter calculate the voltage magnitude in the material when a current of of 0.2 A produces mean time of collisions between electrons of 2.48 x 10 ^-14 seconds. (note: the mass of electron is 9.11 x 10^-31 kg).

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A: Solution:  Given:- Area of cross-section of the copper wire, A=3.5x10-7 m2, current, I=2.8A, and the…

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A: Cross-sectional area is A = 2.3×10-6 m2 Electron density is n = 8.5×1028 electron/m3 Current, I =…

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A:

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A: Drift speed is given by -      Drift speed= current/(n × e ×A) Where, n=number density e=Electric…

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A: 0.29 mm/s

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A: The correct answer is option (c) i.e. 0.187 mm/s

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Q: drift speed

A:

Q: A conductor has a cross-sectional area of 2.3×10-6 m² and the number of free electrons per unit…

A: The given values are, A=2.3×10-6 m2n=8.5×1028 /m3I=12.3 AQ=1.6×1019 C

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A: diameter (d) = 1.02 mm radius (r) = 0.51 mm = 5.1×10-4 m Current density (J) = 1.75×105 Am2Number of…

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Q: A 1.00-mm-radius, cylindrical copper wire carries a current of 8.00 A. If each copper atom in the…

A:

Q: A conductor has a cross-sectional area of 2.3x106 m2 and the number of free electrons per unit…

A: .

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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.