Problem 4: A solid conical frustum has a length L = 14 cm, an initialradius R1 = 6.5 mm and a final radius R2 = 11 mm. The material that it ismade from has a resistivity p = 2.4 × 10-5 Q m.LR2R1Part (a) Integrate over the length of the frustum to write an equation for the resistance of the frustum in terms of L, R1, R2,and p.Expression :R =Select from the variables below to write your expression. Note that all variables may not be required.a, B, n, p, 0, B, d, dx, g, L, m, R1, R2, t, xPart (b) Calculate the resistance for the frustum in units of ohms.Numeric : A numeric value is expected and not an expression.R =

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Answered: Problem 4: A solid conical frustum has…

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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.
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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 .
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Part A What is the resistance of A 1.0-m-long gold wire that is 0.50 mm in diameter? Express your answer in ohms. ? R = Ω Submit Request Answer Part B A 10-cm-long piece of carbon with a 1.4 mm x 1.4 mm square cross section? Express your answer in ohms. ? R = Submit Request Answer
Wires 1 and 2 are made of the same material. Wire 2 has 1/3 the length and 1/3 the diameter of wire 1. What are the ratios R₂/R₁ of the resistances of the wires? A) R₂/R₁ = 9 B R₂/R₁ = 3 C) R₂/R₁ = 1/3 D R₂/R₁ = 1/9 E None of the other answers is correct
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QUESTION 2 A cylindrical nickel wire of radius 2.0 mm and length 1.6 m has a potential difference of 12 volts applied between its ends. If the wire carries a resistive load of 4.0 Q, what is the drift velocity of the conduction electrons in the wire? Assume that the number density of conduction electrons in the wire is 9.12 x 1028 conduction electrons/m3. a. 0.0060 mm/s b. 0.036 mm/s C. 0.046 mm/s d. 0.016 mm/s e. 0.026 mm/s

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