At –25°C a 25 m metal wire with a diameter of 1.0 mm has a resistance of 0.55 W. If the temperature coefficient of resistivity of the metal is 0.0018/C°, what is its resistivity at 32°C?
At –25°C a 25 m metal wire with a diameter of 1.0 mm has a resistance...
Find the resistance of a 12 meter length of metal wire of 0.5 mm diameter. The resistivity of metal is 2.8×10-6 Ω·cm at a temperature of 20°C. Express the answer with two decimal places.
A conducting wire has a 1.97 mm diameter, a 1.0 m length, and a 60 mohm resistance. What is the resistivity of the material? Please explain how the answer is 1.8288*10^-7 ohm m
A wire 3.66 m long and 6.77 mm in diameter has a resistance of 21.7 m?. A potential difference of 17.5 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made. (a) Number Units (b) Number Units (c) Number Units A wire 3.66 m long and 6.77 mm in diameter has a...
A wire of diameter 0.750 mm and length 45.0 m has a measured resistance of 1.20 Ω. What is the resistivity of the wire?
What is the resistance of a 61.1-m-long aluminum wire that has a diameter of 7.77 mm? The resistivity of aluminum is 2.83x 10-8 Ω . m. resistance:
What length of a certain metal wire of diameter 0.15 mm is needed for the wire to have a resistance of 15 ?? The resistivity of this metal is 1.68
A wire 3.07 m long and 8.24 mm in diameter has a resistance of 17.2 mΩ. A potential difference of 27.7 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made.
Calculate the ratio of the resistance of 10.0 m of aluminum wire 2.4 mm in diameter, to 28.0 m of copper wire 1.7 mm in diameter. The resistivity of copper is1.68×10−8Ω⋅m and the resistivity of aluminum is 2.65×10−8Ω⋅m.
Calculate the ratio of the resistance of 12.0 m of aluminum wire 2.4 mm in diameter, to 26.0 m of copper wire 1.8 mm in diameter. The resistivity of copper is 1.68× 10 −8 Ω⋅m and the resistivity of aluminum is 2.65× 10 −8 Ω⋅m .
Calculate the ratio of the resistance of 12.0 m of aluminum wire 2.0 mm in diameter, to 20.0 m of copper wire 2.5 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. Answer in RAl/RCu =