A coil of wire has a resistance of 35.50 at 28 °C and 37.70 at 48 °C. What is the temperature coefficient of resistivity?
Q: A coil of wire has a resistance of 47.802 at 30 °C and 49.00 at 49 °C. What is the temperature…
A: We are given resistances at 2 different temperatures. We have to find temperature coefficient of…
Q: A 14-gauge copper wire has a cross-section area of 2.081 mm². The resistivity of copper at 20…
A: The initial (20oC) resistance is, R1=ρLA=1.7×10-8 Ωm100 m2.081 mm210-6 m21 mm2=0.817 Ω
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: Two wires have the same cross-sectional area. One is tungsten, which has a temperature coefficient…
A: The coefficient of resistivity of tungsten αt=0.0045 °C-1. The coefficient of resistivity of carbon…
Q: A coil of wire has a resistance of 55.8Ω at 26 °C and 54.1Ω at 61 °C. What is the temperature…
A: Initial temperature To = 26oC Final temperature T = 61oC Initial resistance Ro = 55.8 ohm Final…
Q: A 1.2kg bike wheel, is spinning 210rpm clockwise when a student applies a frictional force as shown.…
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Q: A 500.0 kV power line is delivering 250.0 MW of power. It consists of a copper wire has a radius of…
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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: 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: 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 length of aluminum wire is connected to a precision 10.00-V power supply, and a current of 0.4212…
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Q: A tungsten wire has a radius of 0.093 mm and is heated from 20.0 to 1322 °C. The temperature…
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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: 8. The resistance R and temperature T for an electric conductor is given as R =r +aT with r as the…
A: dependence of resistance (R) on the temperature is given as : R = r + aT where r is the resistance…
Q: . A certain lightbulb has a tungsten filament with a resistance of 19.0 N when at 20.0°C and 140 N…
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Q: A 3.5m long wire with a radius of 22.0mm has a resistance of 29.1ohms at 20degreesC. If its…
A: Given data: Length of the wire is, L = 3.5 m The radius of the wire is, r =22 mm= 0.022 m Initial…
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: A length of 120 cm from Aluminum cylinder with a cross-sectional area of 2.82 x 10 m2, the…
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Q: e same wire at -88.0°C, what current should she expect (in A)? The temperature coefficient of…
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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 coil of fine copper wire has a resistance of 6.4-Ω and a total mass is 15.1 g. What is the…
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Q: An iron wire has a resistance of 78.7. m ohm at 20 degrees Celsius. When the wire carries a current,…
A: The temperature coefficient of resistance for iron is 0.0057 C-1 ...
Q: A coil of wire has a resistance of 36.2Ω at 26 °C and 61.7Ω at 67 °C. What is the temperature…
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- The resistance of a coil of copper wire is 4 Ω at 5 °C . What is the resistance at 55 °C .The coefficient of resistivity for copper is 4.3 × 10−3°C−.A tungsten wire has a radius of 0.068 mm and is heated from 20.0 to 1326 oC. The temperature coefficient of resistivity is α = 4.5 × 10-3 (Co)-1. When 110 V is applied across the ends of the hot wire, a current of 2.1 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.At 20 degrees C, a gold wire of length 95 m with a diameter of 1.6 mm is connected across a 15 V dc source. What is the current in the wire? resistivity of gold at 20 degrees C = 2.24 x 10-8 olhm meters, temperature coefficent = 0.0083 1/K
- A certain metal has a resistivity of 13.6×108 m at 20°C. the temperature coefficient of the given material is 0.00392°C, what will be the resistivity at 850°C.A common flashlight bulb is rated at 0.34 A and 2.3 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.0 2, what is the temperature of the filament when the bulb is on? The temperature coefficient of resistivity is 3.7 x 10-3 K-1 for the filament material.The resistivity of a material used to make a round 950W resistor is 53W per unit length. If the resistor has a radius of 0.16 in, what is it’s length?
- AsapA 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 the same temperature. At what temperature are their resistances equal? The temperature coefficient of resistivity for copper is 3.90 x 10-3(°C)-1 and for iron it is 5.00 x 10-3(°C)-1. °CAn engineering intern is studying the effect of temperature on the resistance of a current carrying wire. She applies a voltage to a aluminum wire at a temperature of 53.0°C and notes that it produces a current of 1.10 A. If she then applies the same voltage to the same wire at -88.0°C, what current should she expect (in A)? The temperature coefficient of resistivity for aluminum is 3.90 x 10-³ (°C)-¹. (Assume that the reference temperature is 20°C.) A