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1. A conducting wire made of aluminum has approximately 1.5x1020 free electrons for every centimeter of its length. The electrons have a drift speed of 0.03 cm/s. How many electrons pass a point in the wire each second? a). 2.31018 e-/s b). 1.5x1018 e-/s c) 0.5x1018 e-/s. d) 4.5x1018 e-/s 2.For the conductor in question #2, assume that it has a cylindrical shape with a radius of 1.4 mm. Find the current density in the conductor assuming that it is uniform....
4.2E23 Electrons pass through a wire in two minutes. What is the current through the wire?
A 9.8×10−4 V/m electric field creates a 4.9×1017 electrons/s current in a 1.7-mm-diameter aluminum wire. What is the drift speed and what is the mean time between collisions for electrons in this wire?
A 1.9×10−3 V/m electric field creates a 3.2×1017 electrons/s current in a 1.0-mm-diameter aluminum wire. What is the drift speed? What is the mean time between collisions for electrons in this wire?
A 3.0×10−4 V/m electric field creates a 2.1×1017 electrons/s current in a 2.0-mm-diameter aluminum wire. Part A What is the drift speed? Part B What is the mean time between collisions for electrons in this wire?
A current of 77.0 mA exists in a metal wire. (a) How many electrons flow past a given cross section of the wire in 10.9 min? _____ electrons (b) In what direction do the electrons travel with respect to the current?
A current of 75.8 mA exists in a metal wire. (a) How many electrons flow past a given cross section of the wire in 10.8 min? electrons (b) In what direction do the electrons travel with respect to the current? same directionopposite direction The magnitude is zero.
If a current of 77.0 mA exists in a metal wire, how many electrons flow past a given cross section of the wire in 9.0 minutes? _______ electrons Sketch the direction of the current and the direction of the electrons' motion. (Do this on paper. Your instructor may ask you to turn in your work.)
In a wire, 7.69×10207.69×1020 electrons flow past any point during 2.852.85 s. What is the magnitude of the current ?I in the wire?
If 1.0 A of current are passing through a wire how many electrons pass through a cross-section of the wire in 1.0 hours?