Suppose the current is 0.19±0.005 A and the diameter is 0.46±0.005 mm. The slope of a graph with electrostatic potential as the y variable and length as the x axis is -1.066±0.008 V/m. What is the measured resistivity with uncertainty?
Suppose the current is 0.19±0.005 A and the diameter is 0.46±0.005 mm. The slope of a...
Part A How long must a 0.70-mm-diameter aluminum wire be to have a 0.46 A current when connected to the terminals of a 1.5 V flashlight battery? Express your answer to two significant figures and include the appropriate units. L = Value Units Submit Request Answer Part B What is the current if the wire is half this length? Express your answer to two significant figures and include the appropriate units. I= Value Units Submit Request Answer
Calculate the ratio of the resistance of 11.0 m of aluminum wire 2.5 mm in diameter, to 23.0 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. --------------------- A length of aluminum wire is connected to a precision 10.00-Vpower supply, and a current of 0.4132 A is precisely measured at 23.5 ∘C. The wire is placed in a new environment of unknown temperature where the measured current is...
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?
A d = 3.71 mm diameter wire carries an electric current of I = 18.2 A when the electric field is E = 5.72 times 10^-2 V/m along the wire. What is the current density? What is the conductivity of the wire? What is the resistivity of the wire?
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.
An aluminum wire with a diameter of 0.115 mm has a uniform electric field of 0.235 V/m imposed along its entire length. The temperature of the wire is 45.0°C. Assume one free electron per atom. (a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity (in Ω · m) of aluminum at this temperature. ρ = Ω · m (b) What is the current density (in MA/m2) in the wire? J = MA/m2 (c) What is...
An aluminum wire with a diameter of 0.105 mm has a uniform electric field of 0.325 V/m imposed along its entire length. The temperature of the wire is 35.0°C. Assume one free electron per atom. (a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity (in Ω · m) of aluminum at this temperature. ρ = _______Ω · m (b) What is the current density (in MA/m2) in the wire? J = ________MA/m2 (c)...
15. A spool of aluminum wire 290 m long and with a diameter of 0.440 mm is at 20.0°C. For aluminum, the resistivity is 2.82 ✕ 10−8 Ω · m and the temperature coefficient of resistivity is 3.90 ✕ 10−3 (°C)−1. (a) What is the magnitude of the electric field (in V/m) in the wire if it carries a current of 0.600 A? V/m (b) What is the electric power (in W) delivered to the spool while it carries a...
A cylindrical tungsten filament 15.0 cm long with a diameter of 1.10 mm is to be used in a machine for which the temperature will range from room temperature (20 ∘C) up to 120 ∘C. It will carry a current of 13.5 A at all temperatures ( Resistivity of tungsten at 20 ∘C is 5.25×10−8Ω⋅m , the temperature coefficient of resistivity at 20 ∘Cis 0.0045 ∘C−1 ) Part B What will be its resistance with that field? Express your answer...