Question

a toaster with 4m length of nichrome(resistivity is 150Ã—10^-8 and temperature coefficient of resistivity is 0.4Ã—10^-3/Â¤c) wire as its heating element is rated at 1050w and operates on 220v.the operating temperature of this is 320deg celcius. what is the radius of the wire?

Jul 12, 2018

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