Asked by komal yaseen
the resistance of a platinum resistance thermometer is 200.0 ohm at o degree centigrade and 257.6 ohm when immersed in hot bath,what is the temperature of the bath when 'alpha' for platinum is 0.00392degree centigrade inverse.
Answers
Answered by
Henry
R2 = R1 + 0.00392(T2-T1)R1 = 257.6 Ohms.
200 + 0.00392(T2-0)200 = 257.6
200 + 0.784(T2-0) = 257.6
200 + 0.784T2 = 257.6
0.784T2 = 57.6
T2 = 73.5o C.
200 + 0.00392(T2-0)200 = 257.6
200 + 0.784(T2-0) = 257.6
200 + 0.784T2 = 257.6
0.784T2 = 57.6
T2 = 73.5o C.
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