A wire with a length of 200 meters has a diameter of 0.052 cm is drawn so that its new diameter is 0.041 cm. What is its resistance before and after it was drawn if the conductivity of the wire is 1.724 µ Ω-cm at 20 °C.

Q: In an experiment using a copper made conductor, the resistance of the conductor which has a diameter…

A: According to question we need to calculate the value of length of the copper conductor in meters.

Q: A wire with length of 2000 meters have a diameter of 0.041 cm has a resistance of 3.5 ohms is drawn…

A: Here, we have given a wire with a length of 2000 meters.  And the diameter and the resistance of the…

Q: Calculate the cross-sectional area, in mm2, of a piece of copper wire, 40 m in length and having a…

A:

Q: A 0.3 cm thick pane covers a window of 5 103 cm2. The amount of heat that flows through it every…

A: Given: Thickness, L=0.3 cm=0.003 m Area, A=5×103 cm2=0.5 m2 For every hour, t=1 h=3600 s Temperature…

Q: Q) Two particles with positive charges, each 2.0 meters apart. The two charges of the particles have…

A: The solution can be achieved as follows.

Q: A 20 m Cu wire 1.0 mm in diameter is joined to a 60.0 m iron wire of the same diameter. The current…

A: Let us consider the wire is made up of Cu:  So, l1=20 cm and the diameter, d1= 1 mm So, radius,…

Q: Question 3. A copper coil has a resistance of 2.43 at 50°C. Find its resistance at 60°C. The…

A: The given formula is:α=RT0​​(T−T0​)RT​−RT0​​​Given:Resistance at 50 °C is 2.43 ohm Temperature…

Q: A copper wire has a resistance of 5 ohms at 20 degree Celsius. Caluclate its resistance is the…

A: Given that R0=5 ohmT1=20°CT2=65°C Although formula of Resistance at T2 temperature is  R=R01+αT2-T1…

Q: The temperature coefficient of resistance at 30˚C of a conductor is 0.003759. If it has a resistance…

A: At T=300C , α=0.003759 At T=250C , R25=1.25 At T=400C , R40=? RT=R0(1+α(T0-TT) At T=25…

Q: Calculate the cross-sectional area, in mm2, of a piece of copper wire, 40 m in length and having a…

A: Given, l=40 mR=0.25 ohmρ=0.02×10-6 ohm A = ?

Q: The temperature coefficient of a wire of conducting materials is 0.004/°C at 20°C. The resistance of…

A: We need to find temperature at given resistance .

Q: A voltage of 2000 V exists across 1 cm insulating space between two parallel conducting plates. An…

A: Given: The voltage across the plates, V=2000 V. Insulating space between two parallel conducting…

Q: The conductivity of Ag is about 61.4MS/m. What is the resistance of a 2m length Ag wire having 1mm…

A: Resistors, inductors and capacitors form an integral part of any electrical circuit. A source,…

Q: 4. You have two cylindrical conductors each one meter long. One is made of aluminum with a radius of…

A: Given, LAl=1 mLCu=1 mrAl=1 mm=1×10-3 mρAl=2.8×10-8 ΩmρCu=1.7×10-8 ΩmV=10 VI=10 A

Q: A coil of copper wire has a resistance of 90 N at 20°C and is connected to a 230 V supply. By how…

A: The value of resistance increased will demand more voltage drop for the same amount of current flow…

Q: Electrical conductivity increases with increasing temperature. TRUE FALSE

A: Correct option is False Why because, for a given conductor, if temperature increases , There is…

Q: If a wire is made of a material that has zero resistance at -123.40C, its temperature coefficient of…

A: the relation between the resistance and temperature is given by  RT​=RT′​[1+α(T−T′)] where,  α =…

Q: In Figure (a) below, a 10.17 V battery is connected to a resistive strip that consists of three…

A:

Q: Materials whose conductivity falls between those of conductors and insulators are called

A: Introduction -  Conductors - The materials  that allow electricity to pass through them are known as…

Q: Electrical engineering Calculate the resistance of an annealed copper conductor, 2000 m long and…

A: We need to find out resistance of given wire

Q: A wire has a circular cross-section of radius r= 3.53 mm. The conductivity of the wire is 1x10^5…

A:

Q: The resistance of tunsgten filament at 1750c° is 4ohm. Find the resistance of the filament at…

A: It is given that: T1=1750°C=1750+273=2023 KR1750=4 ΩT2=20°C=20+273=293 Kα=6×10-3 /K

Q: The resistance of a conductor wire at 20 °C is 1 Ω. Find the resistance value of this wire at 100 C°…

A:

Q: The resistance of copper wire with α = 0.00393/C° at 20°C is 64 Q. At 94 °C, its resistance would be…

A:

Q: If the cross sectional area of the conductor increases, then the resistance of the conductor A5 From…

A:

Q: The cross section of a copper conductor wire is 0.02062 in2 with a resistivity of 0.3794 μ Ω -in.…

A: Given, Cross section of conductor A=0.02062 in2 Resistivity, ρ=0.3794 μΩ-in Length l=850 ft=850×12…

Q: 9,9 B- The resistance of a silver wire is 0.04 kn at-30 C, what its resistance at-2 C?

A:

Q: Suppose we have a core of 1 mm² cross-sectional area, path length 4 mm, with permeability 1000…

A: Given, Cross sectional area of core, A=1 mm2=1×10-6 m2 Length, l=4π mm Permeability, μr=1000 and…

Q: At what temperature will intrinsic silicon become a conductor? Assume that un = 350 cm²/Vs and up =…

A:

Q: An n-type piece of silicon experiences an electric field equal to 0.2 V/um. Calculate the velocity…

A: Given, A n-type piece of Si experiences An electric field E=0.2 V/μm Mobility, μn=1350 cm2/Vsμp=480…

Q: Oppositely charged parallel plates are separated by 5.60 mm. A potential difference of 600 V exists…

A:

Q: The temperature coefficient of resistance at 30°C of a conductor is 0.003759. If it has a resistance…

A:

Q: Conductors A and B are connected in parallel. Their respective specific resistances are in the ratio…

A: We need to find out cross section area ratio for given conductor

Q: 31.The potential difference between two points on a wire that are 8 m apart is 7.2mV when the…

A: Given, The length of the wire, L=8 m Potential between two points, V=7.2×10-3 V The current density,…

Q: 3. A conductor whose diameter is 0.175 inch has a resistance of 0.5 ohm. The wire is drawn through a…

A: Resistance is the opposition to the flow of current. Its unit is ohm. Formula to calculate…

Q: Determine the electrical conductance of a 2m length of nichrome (a high temperature Ni Cr alloy)…

A:

Q: A negligibly small current is passed through a wire of length 15 m and uniform cross-section 6.0 ×…

A: Given, Wire length, l = 15 m. Uniform cross sections are, 6×10-7 m2. Resistance, R=5 Ω. Resistivity,…

Q: The specific resistance of platinum at 0°c is 10.3 µ.cm. how long must a wire of platinum be to have…

A: specific resistance s=10.3×10-6×10-2Ωm Resistance R=4Ω at 0°c Diameter d=0.0274cm

Q: ns lespons Quèstion 7 If charge is placed at minus infinity, its potential is infinite None of these

A: To find potential :  Given charge is place at infinity

Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.