HomeworkLib
Question

a piece of wire needed fir a heater is ti be made of manganin. it is...

a piece of wire needed fir a heater is ti be made of manganin. it is to have a cross sectional area of 1.5*10-7 m2 and a resistance of 5. how long must it be. manganin has a resistivity of 44x10-8.
science   biology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Answer: - We have .. 44x108 5x1058 5x1.5x07 44 x 108 L = 1.7m) tlóza I the wire has to be [1.7m long, a = please rate my Ansi

0 0
Add a comment
Know the answer?
Add Answer to:
a piece of wire needed fir a heater is ti be made of manganin. it is...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A piece of wire has a cross sectional area of 5.5*10^-4 m^2 and is 12 cm...

    A piece of wire has a cross sectional area of 5.5*10^-4 m^2 and is 12 cm long. The resistivity of the wire is 1.8*10^-8 Ωm. The wire is placed in series with a capacitor to form a circuit which has an RC time constant of 0.575 ms. What is the capacitance of the capacitor?

  • 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

  • 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...

  • 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?

  • 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%

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT