Question

Calculate the resistance of a aluminium wire of length 301 km and diameter 5 cm.​

Calculate the resistance of a aluminium wire of length 301 km and diameter 5 cm.​
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

If l is the length of the wire, r is the radius of the wire, is the resistivity of a wire, then its resistance is given by

Given the length of the wire is 301km = 301000m and the diameter of the wire is d = 5cm. So the radius of the wire is r = 2.5cm = 0.025m. The resistivity of the aluminium is = 2.65 \times 10^-8m. Therefore,

So the resistance of a aluminium wire is 4.06.

0 0
Know the answer?
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
Similar Questions
If the diameter of a copper wire is 9.52 mm, find the resistance of a 20.00...
If the diameter of a copper wire is 9.52 mm, find the resistance of a 20.00 km length of copper wire (such wire used for power transmission). The resistivity of the copper is 1.72 x 10^-8 Ohm meter
The electrical resistance of a wire varies directly with the length of the wire and inversely...
The electrical resistance of a wire varies directly with the length of the wire and inversely with the square of the diameter of the wire. If a wire 50 feet long and 3 millimeters in diameter has a resistance of 0.255 ohm, find the length of a wire of the same material whose resistance is 0.147 ohm and whose diameter is 2.5 millimeters.
A hair dryer has a resistance wire of 1200‐W. The resistance wire has a diameter of...
A hair dryer has a resistance wire of 1200‐W. The resistance wire has a diameter of D = 0.3 cm and is 80 cm long. (a) Determine the rate of heat generation in the wire per unit volume, in W/cm3. (b) Determine the heat flux on the outer surface of the wire as a result of this heat generation.
a wire resistor has a resistance of 9. if the wire had a diameter 3 times...
a wire resistor has a resistance of 9. if the wire had a diameter 3 times bigger, but keeping the same length, what would the resistance be?
The resistance of a metal wire with diameter of 200μm and length of 1.00m is 0.55Ω...
The resistance of a metal wire with diameter of 200μm and length of 1.00m is 0.55Ω . the density of conduction electrons in the metal is 8.50 x 1028 m-3. Assuming that the effective electron mass is me = 9.1 x 10-31kg, calculate i) the conductivity of the metal ii) the drude scattering time iii)the electron mobility (give the answer in units of cm2V-1s-1 iv) the fermi velocity of electrons.
Calculate the ratio of the resistance of 9.4 m of aluminum wire 2.0 mm in diameter,...
Calculate the ratio of the resistance of 9.4 m of aluminum wire 2.0 mm in diameter, to 15.7 m of copper wire 2.4 mm in diameter. RAl / RCu = 1.33 Incorrect: Your answer is incorrect.
A length of copper wire carries a current of 14 A, uniformly distributed through its cross...
A length of copper wire carries a current of 14 A, uniformly distributed through its cross section. Calculate the energy density of (a) the magnetic field and (b) the electric field at the surface of the wire. The wire diameter is 2.6 mm, and its resistance per unit length is 2.7 Ω/km.
Calculate the ratio of the resistance of 14.0 m of aluminum wire 1.5 mm in diameter,...
Calculate the ratio of the resistance of 14.0 m of aluminum wire 1.5 mm in diameter, to 28.0 m of copper wire 2.9 mm in diameter. Assume electrical resistivity of aluminum is 2.65×10−8 Ω⋅m and electrical resistivity of copper is 1.68×10−8 Ω⋅m.
Calculate the ratio of the resistance of 15.0 m of aluminum wire 2.3 mm in diameter,...
Calculate the ratio of the resistance of 15.0 m of aluminum wire 2.3 mm in diameter, to 26.0 m of copper wire 1.9 mm in diameter. The resistivity of copper is 1.68×10−8Ω⋅m and the resistivity of aluminum is 2.65×10−8Ω⋅m. Express your answer using two significant figures.
The resistance of a piece of wire is (I) directly proportional to the length of the...
The resistance of a piece of wire is (I) directly proportional to the length of the wire (II) inversely proportional to the diameter of the wire (III) directly proportional to the resistivity of the wire (IV) directly proportional to the temperature in Celsius The correct answers are I and II I, II and III I and III I and IV
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT