A certain lightbulb has a tungsten filament with a resistance of 19.0 when at 20.0°C and 140 when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.

Q: A common flashlight bulb is rated at 0.28 A and 2.7 V (the values of the current and voltage under…

A: We know, T=T0+1αRR0-1 where, T0 is the room temperature  α is the coefficient of resistivity R is…

Q: A tungsten wire has a resistance of 2 N at 20 °C, and a gold wire has a resistance of 4.2 N at the…

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Q: The resistance of a copper wire at 7⁰C is 50 mΩ. If the temperature coefficient of copper at 0⁰C is…

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Q: 1) A resistor has a value of 20 ohms (Ω) when it is at 15 degrees Celsius. If the coefficient of…

A: For question (1),Given,The resistance at  is The coefficient of thermal resistivity is The final…

Q: copper conductor of length 15.24 m and diameter 2.05 mm carries a current of 15 A. Find the electric…

A: Given: The length of the conductor is 15.24 m. The diameter of the conductor is 2.05 mm. The current…

Q: When all the ion channels in a cell membrane are closed, the resistivity is very high. However if…

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Q: An advanced lab student is studying the effect of temperature on the resistance of a current…

A: The solution is attached below. i= 3.404AExplanation:

Q: Resistance depends on the size and shape of a conductor. We expect a long wire to have higher…

A: Given data:  Resistivity (ρ) = 12.08×10-8 Ω.m Length (L) = 14.22 mm = 14.22×10-3 m Diameter (d) =…

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 certain lightbulb has a tungsten filament with a resistance of 22.4 N when at 20.0°C and 143 N…

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Q: A resistor is attached in a simple circuit (see Figure below) to an ideal battery that has AV = 10…

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Q: n electronic device designed to operate at any temperature in the range from -17.6°C to 57.9°C…

A: The relation between resistance and temperature is given by:- ∆R= Rα∆T Where; ∆R= change in…

Q: A tungsten lamp filament has a temperature of 2050degrees celcius and a resistance of 500olms when…

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Q: What is the resistance of a wire with a length of 43.4 m and a radius of 2.8 mm, made from a metal…

A: Given data: The length is L=43.4 m The radius is r=2.8 mm The resistivity is ρ=6.0×10-8 Ω.m The area…

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: 1 0.500-meter length of wire with a cross-sectional area of 3.14 x 106 meters squared is found to…

A: Given value--- length = 0.5 m. Area = 3.14 × 10-6 m2 . Resistance = 2.53 × 10-3 ohm. We have to…

Q: A certain lightbulb has a tungsten filament with a resistance of 18.4 when at 20.0°C and 141 2 when…

A: Given  Resistance, R= 18.4 ohm at 20°C   R = 141 ohm at temperature ,T

Q: At room temperature (27.0 °C) the resistance of a heating element is 100 2. What is the temperature…

A: Given that - room temperature Resistance at room temperature Resistance at increased temperature…

Q: Nichrome alloy has a resistivity of 110 x 10-6 Ncm. From a roll of nichrome wire of 2.5 mm diameter,…

A: Given values: Resistivity, ρ=110×10-6 Ωcm Radius, r=2.5 mm2=1.25 mm Length, l=1 m

Q: A certain lightbulb has a tungsten filament with a resistance of 18.5 N when cold and 136 N when…

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Q: A silver wire has a length of 33.0 m and a resistance of 2.60 2 at 20.0°C. Assuming a circular…

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Q: closed system consisting of 2 lb of a gas undergoes a process during which the relation between…

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Q: A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which…

A: Initial current,

Q: The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it…

A: Given  αgold=0.0034 (C0)-1 αtungsten=0.0045 (C0)-1∆RRgold=7.9%

Q: vires are made of copper, but have different diameters. If the resistance of wire A is 27 Q/m and…

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Q: A 150 W heating coil (like a light bulb) is designed to operate from 125 V. The coil is made from a…

A: Given that,Power : P = 150 (W)Voltage : V = 125 (V)Temperature coefficient :α = 2.3×10-3 (/°C)Final…

Q: A conducting cable of length 23.5 m and radius 0.500 mm is connected to the battery providing…

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

A: Given data-Temperature, T1=27.50CResistance of the silver wire at T1, R1=2.1 ohmTemperature,…

Q: •21 ILW A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage…

A: Operating resistance of the bulb is R=VI=2.9 V0.3 A=9.67Ω

Q: A conducting wire is 25 cm long and has a diameter of 0.5 mm. You measured the resistance of the…

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Q: A common flashlight bulb is rated at 0.25 A and 2.6 V (the values of the current and voltage under…

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Q: Consider a carbon rod resistor that has a uniform cross-sectional area of 5.00 mm-. When a potential…

A: The resistance of a material is equal to the resistivity and length of the conductor and inversely…

Q: A toaster has a Nichrome (a-4.5x10* °C) heating element that has a resistance of Ro- 80 n at a…

A: Given data: Resistance  R0=80Ω Temperature T0 =20°C Coefficient of temperature α=4.5×10-4°C-1…

Q: A certain lightbulb has a tungsten filament with a resistance of 20.5 Ω when at 20.0°C and 147 Ω…

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Q: Problem 1. A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41.O N at…

A: solution as

Q: A common flashlight bulb is rated at 0.25 A and 2.5 V (the values of the current and voltage under…

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Q: A 5-meter-long conductor with diameter of 5mm is connected to a source and an external resistance.…

A: Let l and d are the length and the diameter of the conductor respectively, σ0 be the conductivity at…

Q: A certain lightbulb has a tungsten filament with a resistance of 22.2 Ω when at 20.0°C and 149 Ω…

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Q: The resistivity of copper is 1.72E-8 Ω·m. We would like to use a copper wire to connect two devices…

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Q: A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage under…

A: Given V at Operating temperature- 2.9V Current at Operating temp- 0.30A R1 = Resistance at room…