Resistance of a tungsten filament at 150 degree Celsius is 133 Ohm . What will be the resistance at 500 degree Celsius the temperature coefficient of resistance of tungsten at zero degree celsius is 0.004 5 degree Celsius inverse

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Solution

Dear Student
Rt = Ro(1+ $α$ t),
where Rt is the resistance at temperature t , $α$ is the coefficient of resisrance and Ro is the resistance at 0 degree.
133 = Ro(1+0.0045150)
this gives Ro = 79.4
From this
Rt = 79.4(1+0.0045500)
=258.05Ohm

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Resistance of a tungsten filament at 150 degree Celsius is 133 Ohm . What will be the resistance at 500 degree Celsius the temperature coefficient of resistance of tungsten at zero degree celsius is 0.004 5 degree Celsius inverse

Dear Student Rt = Ro(1+αt), where Rt is the resistance at temperature t , αis the coefficient of resisrance and Ro is the resistance at 0 degree. 133 = Ro(1+0.0045*150) this gives Ro = 79.4 From this Rt = 79.4(1+0.0045*500) =258.05Ohm

Dear Student
Rt = Ro(1+ $α$ t),
where Rt is the resistance at temperature t , $α$ is the coefficient of resisrance and Ro is the resistance at 0 degree.
133 = Ro(1+0.0045150)
this gives Ro = 79.4
From this
Rt = 79.4(1+0.0045500)
=258.05Ohm