Show explicitly that most economical conductor size in a cable would be D=2.718*d; where the symbols have their usual meanings
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Show explicitly that most economical conductor size in a cable would be D=2.718*d; where the symbols have their usual meanings
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- Suppose you wish to fabricate a uniform wire out of 1.20 g of copper. If the wire is to have a resistance R = 0.520 Ω, and if all the copper is to be used, find the following. (a) What will be the length of the wire in meters?(b) What will be the diameter of the wire in milimeters?Pure copper has a resistivity of 1.68 × 10−8 Ωm. Some accurate cubes of copper are prepared,and electrical measurements are made, for which current is passed across a pair of oppositefaces.a) Comparing a 2.5 cm cube and a 5 cm cube, which will have the higher conductance? Explain your answer.b) Given eight 1 cm cubes, how can they be stacked to get the highest and the lowest resistance between opposite faces of the stack? Calculate the resistance of each stack.A potential difference of 2.20 V will be applied to a 43.00 m length of 18-gauge silver wire (diameter = 0.0400 in). Calculate the magnitude of the electric field within the wire.
- A wire of length 1 km, has a conductance of 0.6 mho. What is theconductance of the same wire which is 3 km long?A cylindrical, ohmic, uniform conductor is placed in a uniform electric field that points from bottom to top along the axis of the conductor, which is aligned with the z-axis. Which of the following statements is correct (select all that apply)? Group of answer choices A)The current density does not depend on r or φ B)The current density is proportional to the conductivity C)The current density is proportional to the cube of the conductor's radius D)The current density is inversely proportional to the cross-sectional area of the conductorSubject:- physics