An iron wire has a length of 1.50 m and a cross sectional area of 0.240 mm2. If the resistivity of iron is 10.0 x 10-8 0. m and a potential difference of 0.800 V is maintained across its length, determine the current in the wire (in A). A
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- Part A:If there is an annealed copper wire with resistivity 0.172 nano ohm meters and a diameter of 2mm placed in an electric field of 16,000N/C, then how much current will go through the wire? Part BIf this wire (the same as in part A) has an electron density of 8.5x10^28 m^-3 then what is the drift velocity of the electrons in this wire? The charge of each electron is, as usual, 1.602x10^-19C.The current density of a silver wire is 3.20x106 A/m² . If the current and the drift velocity of the electrons through the wire is 2.00 A and 3.20x10-4 m/s respectively. . Part A - Find the diameter of the wire and the density of free electronsDon't provide handwritten solution.
- Question A2 Pure copper has a resistivity of 1.68 x 10-8 Nm. Some accurate cubes of copper are prepared, and electrical measurements are made, for which current is passed across a pair of opposite faces. a) Comparing a 2.5 cm cube and a 5 cm cube, which will have the higher conductance? Ex- plain your answer. b) Given eight 1 cm cubes, how can they be stacked to get the highest and the lowest resis- tance between opposite faces of the stack? Calculate the resistance of each stack.The resistance R of a conductor depends on its shape and physical dimensions and a property of the material called the resistivity p What does the resistivity of a material depend upon? Assuming that the resistivity of copper is a quarter of that of aluminium and that the density of copper is three times that of aluminimium, find the ratio of the masses of copper and aluminium wires with the same length and the same resistance but with different cross - sectional areas .An aluminum wire having a cross-sectional area equal to 2.90 x 10-6 m² carries a current of 4.50 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. mm/s Need Help? Read It