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The resistance of the platinum wire of a...

The resistance of the platinum wire of a platinum resistance thermometer at the ice point is `5 Omega` and at steam point is `5.39 Omega`. When the thermometer is inserted in a hot bath, the resistance of the platinum wire is `5.795 Omega`. Calculate the temperature of the bath.

Text Solution

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`R_(0)`=`7Omega`, `R_(100)`=`7.50Omega`and `R_(t)`=`7.20Omega`  `t=(R_(t)-R_(0))/(R_(100)-R_(0))xx100`
Now, t=`(7.20-7.0)/(7.50-7.0)xx100`=`(2)/(5)xx100`=`40""^(@)C`
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