A 100-W lightbulb has a resistance of about 12 ΩΩwhen cold (20 ∘C) and 148 Ω when on (hot).   Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1α=0.0045(C)−1. Express your answer to two significant figures and include the appropriate units.

Q: What is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 × 10-8…

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Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 108…

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Q: A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of…

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Q: Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a…

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Q: A certain lightbulb has a tungsten filament with a resistance of 18.0 2 when at 20.0°C and 148 N…

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Q: A certain lightbulb has a tungsten filament with a resistance of 21.7 2 when at 20.0°C and 144 2…

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Q: Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a 0,5…

A: The given data are: V=4.5 Vd=0.5 mm=0.0005 mP=20 Wρ=1.7×10-8 Ω.m

Q: A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 40.8 Ω at 20.0°C. If…

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Q: The temperature coefficient of a certain conducting material is 4.78 × 10-3 (°C)-1. (a) At what…

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Q: Calculate the drift velocity of electrons in a 14-gauge silver wire (which has a diameter of 1.628…

A: Formula for drift velocity (vd) is vd=IneA where I is the current, given I = 15 A e is the charge of…

Q: A ribbon of material with a rectangular cross sectional area of (0.25 mm x 1.00 mm), length 21.9 cm…

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Q: Given that V= J/A-s and 1 Kwh = 3.6 x106 J, what does it cost to operate a window-type air…

A: Given V = J/A-s 1 Kwh = 3.6 x 106 J Current = 10 Amp Voltage = 110 V

Q: A ribbon of material with a rectangular cross sectional area of (0.25 mm x 1.00 mm), length 21.9 cm…

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Q: Assuming that you would want to make a uniform wire out of 5 grams of copper. If this wire is to…

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Q: What is the resistance of a wire made of a material with a resistivity of 32×10° Q·m if its length…

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Q: Although caution must be used in applying ρ = ρ0(1 + αΔT) and R = R0(1 + αΔT) for temperature…

A: The original resistance of the filament,   The temperature change,

Q: !Suppose that you wish to fabricate a uniform wire out of 2.99 g of copper. If the wire is to have a…

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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: A certain laboratory experiment requires an aluminum wire of length of 30.0 m and a resistance of…

A:

Q: Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a…

A: Given data: Battery Voltage (V) = 4.5 V Wire Diameter (D) = 0.75 mm = 0.75×10-3 m Power (P) = 10 W…

Q: An electronic device designed to operate at any temperature in the range from −10.0 °C to 55.0 °C…

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Q: What is the required resistance of an immersion heater that increases the temperature of 1.50 kg of…

A: Write the given values with the suitable variables. m=1.50 kgT1=10 °CT2=50 °Ct=10 min=600 sV=110 V…

Q: A coaxial resistor of a length L22 am-long consists of two concentric cylinders. The inner cylinder…

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Q: A copper wire has a resistance of 0.505 Ω at 20.0°C, and an iron wire has a resistance of 0.537 Ω at…

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Q: A copper wire has a resistance of 0.400 Ω at 20.0°C, and an iron wire has a resistance of 0.426 Ω at…

A: To determine: The temperature at which the resistance of the copper and iron will be equal   Given:…

Q: If a certain metal has a resistance of 8.00 n at temperature 20.0 °C, what is its resistance at…

A: The variation of resistance with temperature is given by,

Q: A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of…

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Q: A copper wire has a length of 38.0 m and a resistance of 4.10 Q at 20.0°C. Assuming a circular…

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Q: What color code corresponds to a resistance of 234x10 5 10% with a temperature coefficient of…

A: Value of Band 1 is 2 (Red) Value of Band 2 is 3 (Orange) Value of Band 3 is 4 (Yellow)  Value of…

Q: Calculate the expected resistance of a circular aluminum cable of diameter 5 mm and length 835 m.…

A: We have to calculate the expected resistance of a circular aluminum cable of diameter 5 mm and…

Q: Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a 0.5…

A:

Q: nce of 0.49 Ω at 20.0°C, and an iron wire has a resistance of 0.57 Ω at the same temperature.  a)…

A: We know that we have given that the A copper wire has a resistance of 0.49 Ω at 20.0°C, and an iron…

Q: A certain lightbulb has a tungsten filament with a resistance of 21.7 2 when at 20.0°C and 144 2…

A: Given : resistance of tungsten filament at 20 °C, R20 = 21.7 Ω Resistance of tungsten filament at…

Q: An aluminum wire has a resistance of 5.50 Q at 10.0°C. Determine its resistance (in Q) at 410°C. The…

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Q: What is the resistance (in units of N) of a wire made of a material with a resistivity of 3.2 × 10-8…

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Q: The thermal coefficient of resistivity of iron is alpha = 5.0 x 10 ^ (- 3 / ° C), that of carbon is…

A: Given data The thermal coefficient of resistivity of iron αi=5×10-3/°C. The thermal coefficient of…

Q: A conductor has a diameter of 2.59 mm. How many meters of this material are needed to yield a…

A: Resistivity of the conductor is ρ=1.77×10-8 Ω/m Diameter of the conductor d=2.59×10-3 m So, radius…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 10-8…

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Q: Compute the equivalent resistance of the network in the given figure, and find the current in each…

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Q: Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a…

A:

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

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Q: Consider a portable electric blanket that runs on a 6 V battery. If you use copper wire with a 0.75…

A: Given data: Battery voltage (V) = 6 V Wire diameter (D) = 0.75 mm = 0.75×10-3 m Power (P) = 15 W The…

Q: A copper wire has a resistance of 0.565 N at 20.0°C, and an iron wire has a resistance of 0.597 N at…

A: Given Data: The resistance of the copper wire is R = 0.565 Ω. The resistance of the iron wire is,…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 108…

A: Given Resistivity=3.2×10^-8 onm meter Length=71.5 Diameter=.5mm

Q: Consider a portable electric blanket that runs on a 3 V battery. If you use copper wire with a 0.25…

A: solution is given as

Q: A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 124 Ω when on (hot). Estimate…

A: In metals, the value of the resistance changes with an increase in the value of temperature and thus…

Q: Calculate the resistance of a copper wire with a diameter of 2.5968 mm having a length of 1000 m at…

A: Given data: Diameter of copper wire is, d=2.5968 mm=2.5968×10-3 m. Length of copper wire is, L=1000…

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.