![File:Determination of the temperature coefficient and coefficient of resistivity of copper, iron and aluminum (1907) (14764102672).jpg - Wikimedia Commons File:Determination of the temperature coefficient and coefficient of resistivity of copper, iron and aluminum (1907) (14764102672).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/f/f7/Determination_of_the_temperature_coefficient_and_coefficient_of_resistivity_of_copper%2C_iron_and_aluminum_%281907%29_%2814764102672%29.jpg)
File:Determination of the temperature coefficient and coefficient of resistivity of copper, iron and aluminum (1907) (14764102672).jpg - Wikimedia Commons
![Electric Resistance Materials Copper Nickel Electric Resistance Wire, Ribbon, Bar | TOKYO WIRE WORKS, LTD. Electric Resistance Materials Copper Nickel Electric Resistance Wire, Ribbon, Bar | TOKYO WIRE WORKS, LTD.](http://www.twire.co.jp/english/images/graph01a.jpg)
Electric Resistance Materials Copper Nickel Electric Resistance Wire, Ribbon, Bar | TOKYO WIRE WORKS, LTD.
![14. The resistances of an iron wire and a copper wire 20°C are 3:9 12 and 4:192 respectively. At what temperature will the resistances be equal ? Temperature coefficient of resistivity iron 14. The resistances of an iron wire and a copper wire 20°C are 3:9 12 and 4:192 respectively. At what temperature will the resistances be equal ? Temperature coefficient of resistivity iron](https://toppr-doubts-media.s3.amazonaws.com/images/6248331/a1740733-745e-4333-bbb3-9321fc6251e2.jpg)
14. The resistances of an iron wire and a copper wire 20°C are 3:9 12 and 4:192 respectively. At what temperature will the resistances be equal ? Temperature coefficient of resistivity iron
![14. The resistances of an iron wire and a copper wire 20°C are 3:9 12 and 4:192 respectively. At what temperature will the resistances be equal ? Temperature coefficient of resistivity iron 14. The resistances of an iron wire and a copper wire 20°C are 3:9 12 and 4:192 respectively. At what temperature will the resistances be equal ? Temperature coefficient of resistivity iron](https://toppr-doubts-media.s3.amazonaws.com/images/4477820/98cac8e9-92e3-44a4-8342-eb036d6ba595.jpg)
14. The resistances of an iron wire and a copper wire 20°C are 3:9 12 and 4:192 respectively. At what temperature will the resistances be equal ? Temperature coefficient of resistivity iron
![The resistance of copper wire at 30 °C is 50 ohms. If the temperature coefficient of copper at 0 °C - YouTube The resistance of copper wire at 30 °C is 50 ohms. If the temperature coefficient of copper at 0 °C - YouTube](https://i.ytimg.com/vi/cPSKWNCVl3Q/hqdefault.jpg)
The resistance of copper wire at 30 °C is 50 ohms. If the temperature coefficient of copper at 0 °C - YouTube
![222222222 At what temperature will the resistance of a copper wire become three times its value 0° C ? [Temperature coefficient of resistance copper = 4 x 10-3 per °C] :- (1) 400°C (2) 450°C (S) (3) 500° C (4) 600° C 19 222222222 At what temperature will the resistance of a copper wire become three times its value 0° C ? [Temperature coefficient of resistance copper = 4 x 10-3 per °C] :- (1) 400°C (2) 450°C (S) (3) 500° C (4) 600° C 19](https://toppr-doubts-media.s3.amazonaws.com/images/5267491/fb6265f8-315e-421e-8998-e44fbd156927.jpg)