A rectangular aluminum bus bar is 0.9m long, 0.15 m wide, 0.013m (1.3cm) thick. If the current in the bus bar flows along its length, and the conductivity (σ) of aluminum is 3.57x10^8 S/m. Calculate the bus bar resistance in µΩ.
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- A8-cm long wire carrying a uniformly distributed 12-µc charge is bent into a semicircle. What is the el O A) 4.2 MV B) 0.042 MV C) 0.42 MV O DI 42 MV E) 420 MVA 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. 797497.60A resistor in the shape of a spherical shell is made up of a material with resistivity of 1.93 x 10-80-m has inner and outer radii of 1.5 mm and 3.7 mm, respectively. Determine the resistance of the said resistor. O 12.1038 microohms O The answer cannot be found on the other choices. O 608.8035 nanoohms O 902.9482 nanoohms
- 2. 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.At what temperature will intrinsic silicon become a conductor? Assume that un = 350 cm²/Vs and up = 60 cm²/Vs. The properties of silicon are as follows: B = 1.08 x 1031 K-3 cm-6, k = 8.62 x 10-5 eV/K, and EG = 1.12 eV. Hint: o≥1000(2-cm)-1 for a conductor typing format pleaseAt what temperature will intrinsic silicon become a conductor based on the definitions in Table ? Assume that μn=120 cm2/V·s and μp = 60 cm2/V·s. (Note that silicon melts at 1430 K.)
- 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.An aluminum wire of unknown cross section has diameter of 0.635 cm and a resistance of 0.28ohm. If the wire is drown through a series of dies until its diameter is reduced to 0.127 cm. What is the resistance of the length conductorAn n-type piece of silicon experiences an electric field equal to 0.2 V/um. Calculate the velocity of electrons in this material. Un=1350 cm²/Vs, up = 480 cm²/V.s. Select one: O a. 2.7 x 10 m/s O b. 2.7 x 10 m/s O C. None of these O d. 2.7 x 108 m/s
- An aluminum wire 7.5 m long is connected in parallel with a copper wire 6 m long. When a current of 5 A is passed through the combination it is found that the current in aluminum wire is 3 A. The diameter of aluminum wire is 1 mm. Determine the diameter of the copper wire. Resistivity of copper is 1.7 x 10 -6 ohm-cm and that of aluminum is 1.724 micro-ohm-cm.Wire size and voltage drop The cross-sectional area of wire is measured in circular mils (CM). 1 mil = 1/1000 inch CM = squaring of mil Example 1: Find CM for a piece of wire has a diameter of .008 of an inch. .008 = 8/1000 = 8 mils CM = 8² = 64 Find CM for a piece of wire has a diameter of .008 of an inch. 5. Find Cm for a piece of wire has a diameter of .064 of an inch. 6. Find CM for a Wire has 24 strands of wire and each strand is .012 inches in diameter.6 6 - A dielectric is a material that is: A) a semiconducting B) a nonconducting C) a superconducting D) none of them E) a conducting