7. A silver wire has a resistance of 2.12 at 27.5 C, and a resistance of 2.72 at 100 C. Determine the temperature coefficient of resistivity of silver.

Q: (25%) Problem 6: A copper wire has a resistance of 0.495 at 20.0°C, and an iron wire has a…

A: Let at temperature T  Riron = Rcu  .535[1+5×10^-3(T-20)] = .495 [1+3.9×10^-3(T-20)]…

Q: 2. Calculate the current density in a copper wire at 20°C, if an electric field of 0.470 V/m exists…

A: The equation for the resistivity of the wire is given by,

Q: 3. Calculate the current density in a gold wire at 20°C, if an electric field of 0.740 V/m exists in…

A: Given, Temperature, T=200 C, and electric field, E=0.740 V/m.

Q: 7.) A gold wire (Paold 2.44 x 10 Qm) has a length of 10 meters and a resistance of 0.5 Q. Determine…

A:

Q: 2. Find the ratio of the diameter of aluminium to copper wire, if they have the same resistance per…

A: Resistance of any electrical device is the ratio of given voltage to the current flowing through…

Q: A silver wire has a resistance of 2.1 ohm at 27.5 °C, and a resistance of 2.7 ohm at 100 °C.…

A: Given that - Initial temperature Final temperature Resistance of the silver wire at initial…

Q: What is the resistance (in units of 2) of a wire made of a material with a resistivity of 3.2 x…

A: Resistance is the measure of opposition to the current flow (or degree of hindrance ) in an electric…

Q: 9- If a current of 5A passes through a conductor with a resistance of 7 ohms for 3 minutes, how…

A:

Q: 3. An electric motor winding uses 180 m of copper conductor with a cross-sectional area of 0.26 cm2.…

A:

Q: 50 \( \Omega \) at 20 C, what is the measured temperature (in units of C) when its resistance is…

A: Initial temperature = T=20 °C Initial resistance = R = 50 ohm Final resistance = R'= 77.3 ohm…

Q: What is the resistance of a 20.0-m-long piece of 12- gauge copper wire having a 2.05 mm diameter?…

A: Given data: Length (L) = 20.0 m Diameter (D) = 2.05 mm = 2.05×10-3 m Resistivity (ρ) = 1.68×10-8 Ω…

Q: 3. A wire 6.50 m long with diameter of 2.05 mm has a resistance of 0.0290 Q. What material is the…

A: Given:-  Length of the wire L= 6.50 m  Diameter of the wire  d= 2.05 mm  The resistance of the wire…

Q: 5. The temperature of a sample of tungsten is raised while a sample of copper is maintained at…

A:

Q: 2. The resistance of a rod with a length of 3.0m and a diameter of 1.0cm is 56.0 Q. If this rod is…

A: Given: Rod length L = 3 m  Diameter D = 1.0 cm or 10-2 m. Resistance R = 56 ohm. Rod is stretched…

Q: 5) A thin copper wire with a diameter 2.5 mm is connected to a 1.2-V potential difference, a current…

A: Diameter,  Potential difference,  Current,  Resistivity,

Q: 6) Each conducting sphere has a conductivity of 1.7 x 10* (Qm)'', a radius of 15cm, and a surface…

A: According to question --- Given that --  condutivity = 1.7 * 108 (ohm-m)-1 radius = 15 cm surface…

Q: If a certain silver wire has a resistance of 6.70 at 140 degree C, what resistance will it have at…

A:

Q: 3. The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in diameter is 0.830 ohms at…

A: 3 Given: Resistance (R) = 0.830 ohms Length (L) = 50.0 m Diameter (D) = 1.15mm

Q: 2. A tungsten filament has a resistance of 133 Q at 150°C. If the temperature coefficient of…

A:

Q: A 0.82 m long wire has a cross-sectional area of 3.6 x 10-° m² and is made of copper of resistivity…

A: Given data: L=0.82 mA=3.6×10-9 m2ρ=1.72×10-8 Ω.m Need to determine the resistance of the wire.

Q: A silver wire has a resistance of 2.1 Q at 27.5 °C, and a resistance of 2.7 Q at 100 °C. Determine…

A: Given data: T1=27.5°CR1=2.1Ω resistance of silver wire at T1T2=100°CR2=2.7Ωresistance of silver wire…

Q: 21. At what temperature will aluminum have a resistivity that is three times the resistivity copper…

A:

Q: 2. Calculate the (a) resistivity and the (b) conductivity of a material that has a length of 15 m…

A: (a) The expression for the resistance of a material is written as, Here, ρ, L and A represent the…

Q: 4. Determine the thermal coefficient of resistance of copper at 30°C, then use this value to…

A:

Q: 5) A copper wire 1.0 miles long, with a diameter of 1.00 mm. What is the resistance of the wire?

A: 5. The resistance of a wire is directly proportional to the length of the wire and inversely…

Q: Question #4. Given a conductive wire of length L = 1 meter and diameter d = 0.32mm, what will be its…

A: Resistivity is a property of the material. It doesn't depend upon the geometry of the wire.

Q: > 25.14 •• A wire 6.50 m long with diameter of 2.05 mm has a resist- ance of 0.0290 N. What material…

A: The materials' resistivity is the resistance of a unit area to the current flow. The complete…

Q: 1. Calculate the (a) resistivity and the (b) conductivity of a material that has a length of 15 m…

A: We have to use some basic formula here.

Q: 3. Calculate the regulated output voltage and circuit currents, ß = 90 %3D R$ = 100 (Vz=6.8V D V =…

A:

Q: The resistivity of gold at room temperature is 2.35 x 10-8 ohm-m. The temperature coefficient alpha…

A:

Q: 3- The resistance of a copper wire is 3.35 0 at 0 °C. What is its resistance at 50 °C? For copper, a…

A:

Q: 1. The resistance of a wire of length 10 m is 2 ohm. If the area of cross section of the wire is 2 x…

A: Resistance, R = 2 ohm Length, L = 10 m  Cross section area, A = 2×10-7 m2

Q: 4. If the resistance of copper wire at 0°C is 1.25 ohms and the temperature coefficient of…

A:

Q: A particular wire has a resistivity of 1.5 x 10sn- m and a cross-sectional area of 2.5 x 105 m2. A…

A: Please see the answer below.

Q: 2. A solid aluminum cylinder has a length of 2000m. What cross- sectional area would this cylinder…

A: This question is based on resistance of conductor.

Q: Why does the resistivity of superconductors become zero

A: In a superconductor, below the critical temperature, the electrical resistance falls to zero.

Q: 2. Which physical properties of the olmic materials determine the magnitude of their resistance?

A: we know that, resistance is defined as : R = ρL/A

Q: A wire (of unknown material) is 10 m long with a 0.9 mm diameter and has a resistance of 0.383 Q at…

A: From the question, it is given that- Length of wire: l = 10 m Diameter of wire: d = 0.9 mm = 9 x…

Q: A silver wire has a resistance of 2.1 Ω at 27.5 °C, and a resistance of 2.7 Ω at 100 °C. Determine…

A:

Q: 2. The resistance of a certain conductor , 300 mil diameter and 20 ft long is 200 x10^-3 n.…

A:

Q: 2. Calculate the (a) resistivity and the (b) conductivity of a material that has a length of 15 m…

A: Current is defined as the rate of flow of charge carriers per unit time. The direction of the…

Q: 3. Determine the resistance of a 1-mile length of 12-gauge copper wire. Given: 1 mile = 1609 meters…

A: Since both questions are different, As per Bartleby guidelines I can answer only 1st one.    Thanks!…

Q: 1) What is the current in milliamperes produced by the solar cells of a pocket calculator through…

A: Current is defined as the rate of flow of charge per unit time, through a cross section of a…

Q: s the temperature coefficient of resistance of a piece of wire having a resistance of 11.56 Ω at 25…

A: Given values:- New Resistance,(R0)=11.56 Ω -----(1) Final temperature,(T2)=25 0C ----(2) Refrence…

Q: 1. Determine the resistance of a 1609-meter length of 12-gauge copper wire. Given: length = 1609…

A: Given value--- length = 1609 m. diameter = 0.002117 m. resistivity = 1.7 × 10-8 ohm m . We have to…

Q: 4. The electrical resistance of a wire varies directly as the length and inversely as square of…

A:

Q: 7. What diameter must a copper wire have if its resistance is to be the same as that of an equal…

A:

Q: ow much heat is produced in 5 min by an electric iron which draws 5 A fr

A: Given:-  The voltage V = 120 V  The current i = 5 A  The time  t = 5 min = 300 sec  Find:-…

Q: A silver wire has a resistance of 2.1 2 at 27.5 °C, and a resistance of 2.7 2 at 100 °C. Determine…

A: Given value--- R1 =2.1 ohm. at T1 = 27.5 degree C.  R2 = 2.7 ohm at T2 = 100 degree C.  We have to…

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.