a piece of wire needed fir a heater is ti be made of manganin. it is...
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piece of wire needed fir a heater is ti be made of manganin. it is...
Calculate the resistance of a piece of 20-gauge gold wire 2.20 m long. The cross-sectional area...
Calculate the resistance of a piece of 20-gauge gold wire 2.20 m long. The cross-sectional area of 20-gauge wire is 0.5176 mm2. Resistivity for ("calculator" notation, in ohm*meter) - aluminium: 2.65 e-8 copper: 1.72 e-8 gold: 2.24 e-8 iron: 9.71 e-8 nichrome: 1.00 e-6 platinum: 1.06 e-7 silver: 1.59 e-8 tungsten: 5.65 e-8
The aluminum (resistivity = 2.82 x 10-8 Ω⋅m) wire used for a high-voltage power line has...
The aluminum (resistivity = 2.82 x 10-8 Ω⋅m) wire used for a high-voltage power line has a cross-sectional area of 6.5 x 10-4 m2. What is the resistance, in ohms, of 12 kilometers of this wire?
A piece of Aluminium that is 20cm long and has a cross-sectional area of 10 m....
A piece of Aluminium that is 20cm long and has a cross-sectional area of 10 m. 1. Calculate the resistance of this piece if the resistivity is ρAl= 2.82×10-8 Ω.m. 2. Calculate the conductivity of the Aluminum. 3. If a potential difference of 10V is maintained across the Aluminum piece. What is the current in that piece?
This assignment is set up for sequential assessment. Complete each question and submit the answer before...
This assignment is set up for sequential assessment. Complete each question and submit the answer before moving on to the next question. Correct answers for each question will be made available once the maximum number of attempts have been made for each submission. Resistance and Resistivity A = area L = length p = resistivity R R =p A (a) A resistor is made of tungsten filament whose resistivity is rou = 5.60x10^-8 sm. Its cross-sectional area is A =...
You are working at a company that manufactures electrical wire. Gold is the most ductile of...
You are working at a company that manufactures electrical wire. Gold is the most ductile of all metals: it can be stretched into incredibly long, thin wires. The company has developed a new technique that will stretch 1.00 g of gold into a wire of length L= 2.40 km and uniform diameter. a) What is 1 gm in kg, and what is the volume of 1 gm of gold? The mass density of gold ρ= 1.93 x 10^4 kg/m3. Watch...
A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7...
A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7 × 10-8 Ω ∙ m. How long would it have to be to have a resistance of 1.0 Ω? Answers: A. 5.9 x 106 m B. 5.9 km C. 5.9 x 104 m D. 5.9 m E. 590 m
Now let’s see how temperature affects the resistance of copper wire. A length of 18 gauge...
Now let’s see how temperature affects the resistance of copper wire. A length of 18 gauge copper wire with a diameter of 1.02 mm and a cross-sectional area of 8.20×10−7 m2 has a resistance of 1.02 Ω at a temperature of 20 ∘C. Find the resistance at 0 ∘C and at 100 ∘C. The temperature coefficient of resistivity of copper is 0.0039 (C∘)−1. On a hot summer day in Death Valley, the resistance is 1.15 Ω. What is the temperature?
Consider copper wire with a cross-sectional area 7.85 × 10–5 m2. Caculate the required length of...
Consider copper wire with a cross-sectional area 7.85 × 10–5 m2. Caculate the required length of this wire such that it has a resistance of 0.341 Ω at a temperature of 180°C. The resistivity of copper is 1.68 × 10–8 Ω·m at 20°C and the temperature coefficient of resitivity of copper is 3.86 × 10–3 °C-1. Ingore any effects of thermal expansion on the dimensions of the wire. Can you please also explain how to use the temperature coefficient to...
Question 1 2.82 x 10 8? m wire used for some of these lines has a...
Question 1 2.82 x 10 8? m wire used for some of these lines has a cross-sectional area of 5.2 x 10 4 m2 High-voltage power lines are a familiar sight throughout the country. The aluminum resistivity What is the resistance of 9.6 kilometers of this wire? Number Units the tolerance is +/-2%
A long copper wire is used to transmit a current from one side of the campus...
A long copper wire is used to transmit a current from one side of the campus to another as part of a scientific experiment to measure the speed of sound. The wire has a cross sectional area of 2.5*10^-6 m^2 and a total resistance of 7.2 ohms. A voltage of 25 V is applied across the length of the wire. The resistivity of copper is 1.68*10^-8 ohms m. How long is the wire? What is the current flowing through the...
This assignment is set up for sequential assessment. Complete each question and submit the answer before moving on to the next question. Correct answers for each question will be made available once the maximum number of attempts have been made for each submission. Resistance and Resistivity A = area L = length p = resistivity R R =p A (a) A resistor is made of tungsten filament whose resistivity is rou = 5.60x10^-8 sm. Its cross-sectional area is A =...
Question 1 2.82 x 10 8? m wire used for some of these lines has a cross-sectional area of 5.2 x 10 4 m2 High-voltage power lines are a familiar sight throughout the country. The aluminum resistivity What is the resistance of 9.6 kilometers of this wire? Number Units the tolerance is +/-2%
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