A 490-W heating coil designed to operate from 110 V is made of Nichrome wire 0.420 mm in diameter. (Assume ρ = 1.50  10-6 Ω · m, and α = 4.000  10-4(°C)−1 for Nichrome.) (a) Assuming the resistivity of the Nichrome remains constant at its 20.0°C value, find the length of wire used.  m (b) Now consider the variation of resistivity with temperature. What power is delivered to the coil of part (a) when it is warmed to 1 200°C?

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A: The temperature coefficients of resistivity (resistance) of silicon and iron are given by:

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A: Given: Toaster initial resistance, R0=10 Ω at temp. T0=20 °C Toaster resistance increased value,…

Q: In the figure. take R 1 = 102 Ω, R 2 = 71 Ω, R 3 = 60 Ω, R 4 = 28 Ω, R 5 = 127 Ω and ΔV 1 = 146 V,…

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Q: The resistance R of a copper wire at temperature T = 22°C is R = 13 2. Estimate the resistance at T…

A: Given data The initial resistance is, R1=13 Ω The initial temperature is T1=22oC The final…

Q: A 330-W heating coil designed to operate from 110 V is made of Nichrome wire 0.720 mm in diameter.…

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Q: Consider a resistor of resistivity 4.12 × 10-8 Ω • m. If an electric field of 19 V/m is applied…

A: Electric field and resistivity relation is E=ρJ Here ρ is resistivity, E is electric field and J is…

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Q: a rod of semiconducting meterial of length L = 3m and cross-sectioanal area A=2.5mm2 lies along the…

A: The resistance of the material is  R=ρLA…

Q: (a) A well-insulated electric water heater warms 119 kg of water from 20.0°C to 55.0°C in 23.0 min.…

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Q: A current of 1.97 A flows through an annealed copper wire 2.25 m long and 1.47 mm in diameter. Find…

A: Current, I = 1.97 A Length, L = 2.25 m Diameter, d = 1.47 mm = 0.00147 m Conductivity, σ = 5.81×107…

Q: Consider a resistor of resistivity 1.59x10^-8 ohms•m. If an electric field of 19 V/m is applied…

A: Let the resistivity of the material of the resistor ρ, the electric field applied on its ends be E,…

Q: A toaster using a Nichrome heating element operates on 120 V. When it isswitched on at 20°C, the…

A: Given: Voltage V=120V Initial current(I1)=1.35A Final Current(I2)=1.23A Initial temperature(T2)=20°C…

Q: (a) Find the current through the resistor in the figure above. (Take R = 4 Ω.) (b) If the resistor…

A: Given Data  Resistance R = 4Ω Voltage Vba = 12V Increased Temperature Tf =1480C  The Coefficient of…

Q: A 640-W heating coil designed to operate from 110 V is made of Nichrome wire 0.700 mm in diameter.…

A: a. the resistance of the coil can be calculated as follows,

Q: A heating element has a temperature coefficient = 0.005 °C-1 is operated at a constant voltage Vo At…

A: Given that temperature coefficient of heating element and initial and final value of current and…

Q: A potential difference of 13 V is found to produce a current of 0.36 A in a 3.7 m length of wire…

A: (a) Given: The potential difference applied on the wire is 13 V. The current flowing through the…

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Q: (1b) A worker grabs a 68 kg crate across a floor by Pulling on a rope inclined 17º above the…

A: Here given a workergrabs a 68 kg crate.The rope inclined 17° above the horizontal. The coefficient…

Q: When an electric heater is turned on, the Nichrome heating element is at 0 degrees C and draws a…

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Q: A straight, cylindrical wire lying along the x axis has a length of 0.450 m and a diameter of 0.165…

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Q: The LED requires a minimum current of 20.0 mA to light. Assuming that your battery is operating at…

A: Given Voltage of battery is V=9.00 V Minimum current is I=20.0×10-3 A

Q: 5 The resistivity of Nichrome is about 100 times that of copper, a typical good conductor. a copper…

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Q: The resistance R of a copper wire at temperature T = 25 °C is R = 112. Estimate the resistance at T…

A: The resistance R of a copper wire with a temperature T in C  is R(T).Then, given that R(25)=11 and…

Q: The magnitude of the magnetic field at a point 88.0 cm from the central axis of a long straight wire…

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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) A 35.5-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of…

A: Given Data The length of copper wire is:L=35.5 m The initial temperature is:To=20°C The heated…

Q: A 560-W heating coil designed to operate from 110 V is made of Nichrome wire 0.640 mm in diameter.…

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Q: color code i if using resistors 1 I (A) V (V) R (2) = V/I R. orange orange gold brown 0.02 4.979V…

A: If the resistors are in series  R=R1+R2+R3= 8

Q: A 500-W heating coil designed to operate from 110 V ismade of Nichrome wire 0.500 mm in diameter.(a)…

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Q: A 400-W heating coil designed to operate from 110 V is made of Nichrome wire 0.440 mm in diameter.…

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Q: A 10-volt potential difference is applied across a 4-m copper wire. Determine the rate of conversion…

A: If there is one charge particle or a bunch of charge particles, they will create certain force on…

Q: A rod of semiconducting material of lenght L=3 m and cross-sectional area A=4.5 mm^2 lies along the…

A: Ohm's law states that the current flowing through a conductor is directly proportional to the…

Q: A (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is…

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Q: A cylindrical rod of semiconducting material with length L and cross-sectional area A is doped so…

A: A cylindrical rod of semiconducting material with length L and cross-sectional area A is doped so…

Q: A heating element is made by maintaining a potential difference of 89.0 V across the length of a…

A: Given that; Potential difference, V=89 V Cross section, A=4.96×10-6m2 Resistivity, ρ=5×10-7Ωm a) We…

Q: For the numerical values given below, the magnitude of the electric field (in V/m) inside a copper…

A: Given data:  Drift velocity (vd) = 7.84 × 10-4 m/s Electron density (n) = 8.46 × 1028 electrons/m3…

Q: A long cylindrical conductor is constructed whose coefficient of resistivity at a temperature of…

A: Given, , Resistivity,                                Temperature coefficient of resistance are .

Q: A 560-W heating coil designed to operate from 110 V is made of Nichrome wire 0.640 mm in diameter.…

A:

Q: If R Ro[1+ a(T-To)], find: = (a) the temperature coefficient of resistivity, a, in terms of R, Ro,…

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Q: () THE FOLLOWING QUESTIONS ARE BASED ON THE INFORMATION GIVEN HERE. A rod of semiconducting material…

A:

Q: Only one

A: Given that-Potential difference, V= 71 VoltCross-sectional area= 3.56×10-6 m2Resistivity, ρ=…

Q: A rod of semiconducting material of length L the x-axis between a = 7 m and cross-sectional area A =…

A: Given: Length, L=7 m Area, A=2.5 mm2 Resistivity,ρ=ρo1-x2L2 ρo=2.5×10-4 Ω.m Potential at x=0, Vo=40…

Q: When an electric heater is turned on, the Nichrome heating element is at 0° C and draws a current of…

A:

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.