Click Submit to complete this weer Questions A 50-V potential difference is maintained across a 7.0-m...
A potential difference of 100 V is maintained across the two ends of a nickel wire of radius 2 mm and length 10 m. Calculate (a) the electric field intensity, (b) the current density, and (c) the electric current through the wire
A heating element is made by maintaining a potential difference of 66.0 V across the length of a Nichrome wire that has a 3.15 × 10–6 m2 cross section. Nichrome has a resistivity of 5.00 × 10–7 Ω·m. (a) If the element dissipates 4910 W, what is its length? (b) If 113 V is used to obtain the same dissipation rate, what should the length be?
When a potential difference of 12 V is applied to a wire 6.6 m long and 0.32 mm in diameter the result is an electric current of 2.1 A . What is the resistivity of the wire?
When a potential difference of 12 V is applied to a wire 6.6 m long and 0.33 mm in diameter the result is an electric current of 2.0 A . 1. What is the resistivity of the wire?
(a) A 35.3-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in this table.) 1.48 A (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire?
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) A 34.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Resistivity (Ω · m) Temperature Coefficient of Resistivity [(°C)−1] Silver 1.59 ✕ 10−8 3.8 ✕ 10−3 Copper 1.7 ✕ 10−8 3.9 ✕ 10−3 Gold 2.44...
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.
16. Two conductors made of the same material are connected across the same potential difference. Conductor A has twice the diameter and twice the length of conductor B. the ratio of the power delivered to A to the power delivered to B? What is
Chapter 26, Problem 018 A wire 5.66 m long and 7.36 mm in diameter has a resistance of 13.3 m2. A potential difference of 26.2 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 Units (b) Number (c) Number Units