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Grade 12Electric Current

the resistance of a platinum wire at o degree celsius is 4 ohm. what will be the resistance at 100 degree celsius, if the temprature coefficient of resistance is 0.0038 degree celsius.

Profile image of jyotsna choudhary
8 Years agoGrade 12
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1 Answer

Profile image of Arun
8 Years ago
Dear student
 
As we know
 
Rt = Ro (1 + alpha* t)
 
Now
R(100) = R(0) ( 1+ 0.0038 *100)
 
R(100) = 4 * 1.38 = 5.52 ohm

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