A tungsten wire has a radius of 0.097 mm and is heated from 20.0 to 1383 oC. The temperature coefficient of resistivity is α = 4.5 x 10-3 (Co)-1. When 120 V is applied across the ends of the hot wire, a current of 1.8 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire

Q: A copper wire of radius a = 0.161 mm has an aluminum jacket of outer radius b = 0.224 mm. There is a…

A: Data Given ,  Inner Radius of the wire ( a ) = 0.161 mm = 0.161 × 10-3 m Outer Radius of wire ( b )…

Q: A 2.0 mm diameter iron wire ( resistivity, p = 9.7 x 10-8 N-m) carries a current of 2.5 A. Determine…

A:

Q: At room temperature, what is the strength of the electric field in a 12 gauge copper wire (diameter…

A: Given,

Q: The resistivity of a 1.0 m long wire is 1.72 x 10*8 Qm and its cross sectional area is 2.0 x 10-6…

A: The resistance is given by  R = ρLA where, L is the length and A is the area and ρ is the…

Q: A copper wire of radius a = 0.204 mm has an aluminum jacket of outer radius b = 0.296 mm. There is a…

A: Data Given ,  Inner Radius of the wire ( a ) = 0.204 mm = 0.204 × 10-3 m Outer Radius of wire ( b )…

Q: A potential difference of 1.5 V is applied across a tungsten wire of length 2.4 m and cross-…

A: According to company policy, only first question will be answered here. Please post the rest…

Q: A copper wire has a circular cross section with a radius of 3.20 mm. (a) If the wire carries a…

A: (a) Expression for drift speed of electrons vd=InqA=Inqπr2=2.60 A8.46×1028 electronsm1.602×10-19…

Q: The electric field of the material between two coaxial cables of radius 0.525 cm and 0.675 cm is…

A: Current density J= σ×E σ = conductivity E= electric field J = 5×10^10 × (2.58 / r^3)  Or

Q: A 1.00-mm-radius, cylindrical copper wire carries a current of 8.00 A. If each copper atom in the…

A: The correct answer is option (c) i.e. 0.187 mm/s

Q: When a current flows in an aluminum wire of diameter 4.57 mm, the drift speed of the conduction…

A: Given: Diameter, d=4.57 mm, radius r=4.75 mm2=2.285×10-3 m Drift speed ,vd=0.000291 m/s Conduction…

Q: 1. What current flows through a 0.50 mm diameter rod of Aluminum that is 20.0 cm long, when 22 V is…

A: Resistance=ρLA A= π r2 = 1.96x10-7 m2 Resistance = 0.027 ohm

Q: A spool of copper wire 290 m long and with a diameter of 0.360 mm is at 20.0°C. For copper, the…

A: The wire's resistivity is, ρ=1.7×10-8 Ω The wire's length is, L=290 m The radius of wire is, r=0.360…

Q: A wire has a current density of 7.47 × 106 A/m². If the cross-sectional area of the wire is 2.39…

A:

Q: A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done…

A:

Q: Q2Silver wire with cross section area 0.923mm2 , the resistivity 10.49g/cm³ and the molar mass…

A: Given data: Cross-section area of silver wire is, A=0.923 mm2=0.923×10-6 m2. Resistivity of wire is,…

Q: When a current of 0.218 A is present in a wire 20.0 m in length with cross-sectional area 8.19 x 10…

A:

Q: A copper wire of 3mm diameter with conductivity of 6.7 * 10' (Q.m) , and electron mobility of 0.0064…

A:

Q: When a current flows in an aluminum wire of diameter 4.67 mm,4.67 mm, the drift speed of the…

A: Radius of the aluminium wire(r)=Diameter of the wire2=4.67×10-32=2.335×10-3mArea of the…

Q: The mean time between collisions in iron is 3.6×10−15 s. What electron current is driven through a…

A: Let t be the mean time of collision in iron, d be the diameter of the wire, E be the electric field,…

Q: current of I = 7.3 A is passing through a conductor with cross sectional area A = 6.5 × 10-4 m2. The…

A:

Q: The copper windings of a motor have a resistance of 46 Ω at 20oC when the motor is idle. After the…

A: Initial resistance of copper windings (r) = 46 ohm initial temperature of the copper windings (t) =…

Q: wire

A: Given: The potential difference across the wire = 4 Volts Length of the wire = 5 m Cross-sectional…

Q: 2.1 A piece of wire l cm long carries a current I when a voltage V is applied across its ends at a…

A: Given data: Length of wire at 0∘C is, l1=L cm. Magnitude of current at 0∘C is, I. Voltage applied…

Q: If the current passing through a resistor is reduced to 0.3 of its value due to an increase in the…

A:

Q: A heating element is made by maintaining a potential difference of 75.0 V across the length of a…

A:

Q: An aluminum wire with a diameter of 0.095 mm has a uniform electric field of 0.215 V/m imposed along…

A:

Q: A copper wire has a circular cross section with a radius of 2.36 mm.     (a)If the wire carries a…

A:

Q: A spool of copper wire 200 m long and with a diameter of 0.320 mm is at 20.0°C. For copper, the…

A:

Q: A nichrome rod of length LN = 78 cm is connected in series (end to end) to a carbon rod of length LC…

A:

Q: 2. A metallic cable 50.0 m long and 10.0 cm in diameter carries a current of 10.0 A. The resistivity…

A:

Q: A spool of copper wire 200 m long and with a diameter of 0.320 mm is at 20.0°C. For copper, the…

A: Calculate the resistance of the wire.

Q: A copper wire has a circular cross-section with a radius of 1.00 mm. (a) If the wire carries a…

A:

Q: A strip of doped silicon 260.0 um wide contains 8.80 × 1022 conduction electrons per cubic meter and…

A:

Q: A lightning bolt discharges 3.0 x 1021 electrons in 300 s. What is the average current during the…

A:

Q: What current flows through a 2.45-cm-diameter rod of pure silicon that is 21.5 cm long, when 1.00 x…

A:

Q: A metallic wire has a diameter of 4.12mm. When the current in the wire is 8.00A, the drift velocity…

A: Given, diameter of metallic wire D = 4.12 mm so its radius R = D2 Current in the wire I = 8.0 A…

Q: A wire is 1.5 m long and 1.1 mm2 in cross-sectional area. It carries a current of 5.9 A when a 2.8 V…

A: Given data:  Wire length (L) = 1.5 m Cross-sectional area (A) = 1.1 mm3 = 1.1×10-6 m3 Current (I) =…

Q: 4) The current supplied by a battery as a function of time is I(t) = (64.27 fA) e-t/(3.78 months).…

A: Current supplied as a function of time is given by; i(t)=64.27e-t3.78 fA Time T=1.413 years=16.96…

Q: A 1.00-mm-radius, cylindrical copper wire carries a current of 8.00 A. If each copper atom in the…

A: The average velocity obtained by charged particles, such as electrons, in a material owing to an…

Q: A spool of copper wire 320 m long and with a diameter of 0.360 mm is at 20.0°C. For copper, the…

A:

Q: If a current of 5A passes through a conductor with a resistance of 7 Ω, 3 minutes of walking, How…

A: Current,  Resistance,  Time,  Charge on an electron,

Q: An aluminum wire (ρ = 2.82x10-8Ωm at 20 °C and α = 3.9x10-3°C-1)with a diameter of 0.085 mm has a…

A:

Q: rrent I =0.35 A flows through a cylindrical resistor made out of some unknown ceramic-like…

A: Given values:- Current,(I)=0.35 A ----(1) Radius of body,(R)=4.25 mm=4.25 x 10-3 m----(2) Length of…

Q: A copper wire of radius a = 0.172 mm has an aluminum jacket of outer radius b = 0.231 mm. There is a…

A:

Q: A 1.00-mm-radius, cylindrical copper wire carries a current of 8.00 A. If each copper atom in the…

A:

Q: A conductor has a cross-sectional area of 2.3x106 m2 and the number of free electrons per unit…

A: .

Q: A spool of aluminum wire 290 m long and with a diameter of 0.360 mm is at 20.0°C. For aluminum, the…

A: Given: L=290md =0.360mm = 0.360*10-3 mT1 = 20°Cρo=2.82*10-8 Ωmα=3.90*10-3 °C-1I=0.600A

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.