If a current of 83.0 mA exists in a metal wire, how many electrons flow past a given cross-section of the wire in 6.0 min?
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If a current of 83.0 mA exists in a metal wire, how many electrons flow past a given cross-section of the wire in 6.0 min?
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- Calculate the drift velocity of electrons inside an aluminum wire that has a diameter of 2.053 mm (12-gauge) carrying a 20.0-A current. Assume one free electron per Al atom. The density and mass of Al is 2.70 x 10^3 kg/m^3 and 26.98 g/mol, respectively. (1 mol = 6.02 x 10^(23) atoms, charge of each carrier = 1.60 x 10^(-19) C).A current of 80.2 mA exists in a metal wire. (a) How many electrons flow past a given cross section of the wire in 11.0 min?An iron wire has a cross-sectional area equal to 5.50 x 10-6 m². Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 12.0 A. (a) How many kilograms are there in 1.00 mole of iron? 0.055 kg/mol (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). 1.43163 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. mol/m³ (c) Calculate the number density of iron atoms using Avogadro's number. atoms/m³ (d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom. electrons/m³ (e) Calculate the drift speed of conduction electrons in this wire. m/s Need Help? Read It
- The density of free electrons in a cylindrical metal wire is 7x10-8 m. The diameter d= 12.23 mm and carrying a current of I- 6.93 A. the drift velocity (in jum/s) of the electrons in the wire must be (charge of electron =1.6x10"19 C)A copper wire has a circular cross section with a radius of 1.66 mm. HINT (a) If the wire carries a current of 3.18 A, find the drift speed (in m/s) of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 x 102⁹ electrons/m³.) m/s (b) For the same wire size and current, find the drift speed (in m/s) of electrons if the wire is made of aluminum with n = 2.11 x 1029 electrons/m³. m/sA current of 82.8 mA exists in a metal wire. (a) How many electrons flow past a given cross section of the wire in 11.0 min? electrons (b) In what direction do the electrons travel with respect to the current? same direction The magnitude is zero. opposite direction
- An aluminum wire having a cross-sectional area equal to 4.60 x 106 m² carries a current of 3.50 A. The density of aluminum is 2.70 g/cm³. Assume each aluminum atom supplies one conduction electron per atom. Find the drift speed of the electrons in the wire.A copper wire carries a current of 81.2 mA. (a) Find the number of electrons that flow past a given point in the wire in 10.5 minutes. electrons (b) In what direction do the electrons travel with respect to the current? The magnitude is zero.same direction opposite directionThere is a net passage of 5.6 ✕ 1018 electrons by a point in a wire conductor in 0.28 s. What is the current in the wire?