1. Calculate the resistance of 915 metres length of a wire having a uniform cross-sectional area of 0.77 cm? if the wire is made of copper having a resistivity of 1.7 x 102 cm. (0.08 Q|
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Q: determine the resistance of a 1609-meter length of 12-gauge copper wire. Given: length = 1609…
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A: We know that electric current = charge/time Current (i) = q/t i = 0.02C/1ms i = 0.002×1000 i = 20A
Q: Find the resistance at 20°C of an annealed copper bus bar 3 m in length and 0.5 cm by 3 cm in…
A: In this question we need to find a resistance of a copper bus bar whose dimensions is given.
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A: The solution is given below
Q: what is the resistance
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Q: 2. What is the resistance at normal room temperature of 80 m of copper wire having a diameter of…
A: resistance of wire = resistivity×Length of the wirecross section of the wire
Q: 16. The resistance of a copper wire at 30°C is 50 Q. If the temperature coefficient of copper at 0°C…
A: resistance at Temperature T = R0(1+tempereture coefficientα0×T given temperature at 30 degree = 50…
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A: Resistance R = Resistivity(ρ)×length (L)Cross section area Given Resistivity of copper = 1.724×10-8…
Q: Determine the resistance of a bus bar made of copper if the length is 10 meters long and the cross…
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A: A simple problem on netwrok subject , and topic is resistance variance with temperature. Look below…
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A: The expression for the resistance is given by:
Q: Calculate the resistance of 915 metres length of a wire having a uniform cross-sectional area of…
A: We know resistance formula .
Q: 1. The density of copper is 9 grams per cu. cm, and the resistivity is 1.724 µ-cm. Determine the…
A: we need to determine the resistance.
Q: 1. Determine the resistance of a 1609-meter length of 12-gauge copper wire. Given: length = 1609…
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Q: .1. What is the resistance of a kilometer-long piece of 14-gage (0.06408 inch diameter) copper wire?
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A: Conductivity
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Q: 3. A wire has a resistance of 0.75 ohm per ft. at an area of 0.00001 square meter. Determine the…
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Q: 1. The density of copper is 9 grams per cu. cm, and the resistivity is 1.724 u-cm. Determine the…
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Q: 2. What is the resistance at normal room temperature of 80 m of copper wire having a diameter of…
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- Semiconductors are ____________. conductors insulators half conductors none of the aboveDetermine the ohms-per-mil-foot of an aluminum conductor located in an area with a temperature of 104F (40C). Use the NEC to determine the ampacity of the following conductors.10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in un-cm? www
- 9. Which of the following statements about conductivity is correct? Distilled water has a lower conductivity than salt water Distilled water has a higher conductivity than salt water Distilled water and salt water have zero conductivity O Distilled water and salt water have a similar conductivity Question 10 10. Which of the following measurements of conductivity is the highest? O 1.2 mS/cm 1100 μS/cm O 0.2 mS/cm O 12 µS/cmQues 1(a). A copper wire has a resistance of 0.85Q at 20°C. What will be its resistance at 40°C? The temperature coefficient of resistance of copper at 0°C is 0.004°℃.The resistivity of a ferric-chromium-aluminum alloy is 51x10° ohm-meter. A sheet of the material is 15 cm long, 6 cm wide and 0.014 cm thick. Determine the resistance between a) opposite ends and b) opposite sides.
- The resistance of a wire is 126.48 ohms at 100°C and 100 ohms at 30°C. Determine the temperature coefficient of copper at 0°C10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in un-cm? 11) The resistance of a copper at 30°C is 500. If the temperature coefficient of copper at 0°C is 0.00427. What is the resistance at 100°C?A cube of an alloy of resistivity is 2.12µn-m is 3x10^-2 m on a side. Determine the resistance between any two faces of the cube. * 67.07µn O 60.77µn O 70.67µn O 77.06µn
- A 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 nanoohmsAn aluminium rod with square cross section is 1.3 m long and 3.8 mm on edge ) What is the resistance between its ends? The resistivity of aluminium is 2.75 - 10-8 Q.m. (ii) What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminium rod? The resistivity of copper is 1.69 * 10-8 Q.m. (iii) Calculate the current (in A) and the current density (in A/m^2) of the cylindrical copper if the potential drop across the ends of the wire is 0.060 V. Select one: a. (i) 3.27 x 10-30 (ii) 15.3 × 10-3 m (iii) l= 18.3 A and J=1 x 105 A/m2 b. (i) 2.50 x 10-3n (i) 3.4 × 10-3 m (iii) l= 24 A and J=2.64 x 10 A/m2 c. (i) 2.50 x 10-3 (ii) 3.4 x 10-3 m (iii) l= 24 A and J=2.08 x 106 A/m2 d. (i) 3.27 x 10-3 (ii) 8.14 x 10-3 m (iii) l= 18.3 A and J=2.64 x 106 A/m2A two wires, one of Copper and the other of Nickel, if the resistance of the first is (12.7 Q), and the second is (11.6 0) at room temperature, at what temperature are their resistances equal? Note that the temperature coefficient of resistivity of Copper is (0.0039 C-1), and for Nickel it is equal to (0.006 C1).