C) A 50-m-long copper wire has a circular cross section with radius r= 2 cm. Given that the conductivity of copper is 5.8×10' (S/m), determine (a) the resistance R of the wire and (b) the power dissipated in the wire if the voltage across its length is 1.5 (mV).
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- A wire has a circular cross-section of radius r= 3.53 mm. The conductivity of the wire is 1x10^5 (Ohm, meter) and its lengthis 2m. The total resistance of the wire in Ohms is:O a. 0.51O b. 0.72ç. 0.26O d. 5136.07O e. 797497.606. You take a copper wire as shown in the figure, where the cross-section area A doubles between parts 1 and 2 of same length, and apply a potential difference across it so that a current flows from part 1 to 2. What happens in part 2 of the wire, as compared to part 1?" r A) The electron current increases B) The electron density increases C) The resistance increases D) The electric field or drift speed decrease E) The electric field and drift speed decrease EA copper conductor has a diameter of 0.6 in and it is 1200 ft long. Assume that it carries a total dc current of 50 A. Find the total resistance of the conductor and the current density. The resistivity of copper is 1.72 x 10-8 2-m.
- A cylindrical copper wire has a diameter 4 mm and length 10 cm with a conductivity 5x107 S/m. If an electric field of 2 mV/m is applied between end points what is the current in the wire? Lütfen birini seçin: a. 2.50 A b. 1.25 A c. 4.34 A d. 5.50 A e. 3.32 A2. When a current of 1A flows through a wire, the drift velocity of the electrons is 0.9 mm/s. What will be the drift velocity of the electrons when a 2A current flows through another wire of the same material having double the length and double the area of cross section and same temperature.Question 3 a. Some materials exhibit the property of superconductivity under certain conditions. State what is meant by superconductivity and explain the required conditions for the material to become superconducting. b. The diagram below shows the cross-section of a cable consisting of parallel filaments that can be made superconducting, embedded in a cylinder of copper. copper cylinder filament The cross-sectional area of the copper in the cable is 2.28 x 10-7 m². The resistance of the copper in a 1.0 m length of the cable is 0.075 N. Calculate the resistivity of the copper, stating an appropriate unit. State and explain the what happen to the resistance of the cable when the embedded filaments of wire are made superconductive? i.
- Find the resistance of an aluminum wire that has a length of 1000 m and a diameter of 1.626 mm. The wire is at 20°C (the resistivity is 2,825 x 104 0 m).An aluminum wire and a copper wire have the same resistance and the same length. Find the ratio of their diameters.a copper conductor has its specific resistance of 1.6 x 10^-16 ohm-cm at 0°C . Find (a) specific resistance at 60°C (b) the resistance temperature coefficient at 60°C
- The length and diemeter of a copper wire are found to be 100 and 0.002 m, respectively. Consider that the resiativity of the copper wire is 1.72 x 10 -m. Calculate the valne of the resistance.Observe the results of an electromagnet experiment to see what happens when the wire material is changed from copper to string and aluminum. Also, describe the differences between the three types of materials.Besides lower electrical conductivity, suggest a reason why ruthenium is not used inelectrical transmission wires. Give a detailed response