Sir practice test 2 - for the chapter you taught on friday - last question - Q10
states that :
temperature coefficient of a wire is a PER DEGREE CELSIUS. At temperature T K resistance is 5 ohm.. At what tempearure will the resistance of the wire be 10 ohm.

I got this question incorrect sir.
In the given solution it is mentioned that since the temp is given in kelvin you convert into celsius. Hence T- 273 and the answer having a three digit no.
I got option 3 - which is when u dont convert into celsius. I dont understand why we are converting thhe temp into celsius... when :
I am confused - pls help me out !

Dear Student,

the standard unit of temp is kelvin thats why ans is given in kelvin but it doesnot matter in the calculation in which the difference have to taken .


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