A 20% increase in the resistance of a copper wire was noticed when its temperature was raised above room temperature. Find the final temperature of the wire if the temperature coefficient of resistivity for copper is 4.0×10-3 /K. [assume that the room temperature = 290 K]

Q: (25%) Problem 6: A copper wire has a resistance of 0.495 at 20.0°C, and an iron wire has a…

A: Let at temperature T  Riron = Rcu  .535[1+5×10^-3(T-20)] = .495 [1+3.9×10^-3(T-20)]…

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: 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 composite conductor 10 [m] long consists of an inner core of steel with radius 1.5 [cm] and an…

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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: (a) A 33.9-m length of copper wire at 20.0°C has a radius of 0.27 mm. If a potential difference of…

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

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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: A wire is made from a material having a temperature coefficient of resistivity of 0.00125 (°C)". In…

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Q: The resistance R of a copper wire at temperature T = 30°C is R = 13 Q. Estimate the resistance at T…

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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: An engineering intern is studying the effect of temperature on the resistance of a current carrying…

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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: (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: length of copper wire = 35.5 m Initial temperature = 20o C radius (r) = 0.31 mm Potential difference…

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 (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: Calculate the drift velocity of electrons when a current of 1.5 A flows in a copper wire of…

A: Given data:  Current (I) = 1.5 A Cross-sectional area (A) = 5.0 mm2 = 5.0×10-6 m2 Electron density…

Q: A 35.1-m length of copper wire at 20.0°C has a radius of 0.23 mm. If a potential difference of 7.0 V…

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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: At 20.0 degrees celsius, copper has a resistivity of 1.68e-8 ohms. Find the resistance of a 3.5m…

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Q: A certain material has a resistance of 250 2 at 20°C. The material is then heated to 1500°C,…

A: We have  initial Resistance Ro = 250 ohm  Final resistance =  R   initial temperature To = 20oC…

Q: Determine the temperature at which the resistance of an aluminum wire will be twice its value at 20…

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Q: A 500-W heating coil designed to operate from 110 V is made of Nichrome wire 0.500 mm in diameter.…

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