Q4. A platinum resistance thermometer has a resistance of 160 22 at 20°C forms one arm of a Wheatstone bridge as shown i

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Q4 A Platinum Resistance Thermometer Has A Resistance Of 160 22 At 20 C Forms One Arm Of A Wheatstone Bridge As Shown I 1 (315.34 KiB) Viewed 80 times

Q4. A platinum resistance thermometer has a resistance of 160 22 at 20°C forms one arm of a Wheatstone bridge as shown in Fig. 24. At this temperature the bridge is balanced with each other arms setting at the same resistance (i.e. R 160 2). The temperature coefficient of resistance of the platinum at 20°C is 0.0039°0- [Given that : R = Ro [1 + 00 (T. -T.)] ♡ R R E-6V – A Voo VBA B M R RI platinum resistance thermometer Fig. 24 (a) What will be the output voltage V, of the bridge if the temperature (12 marks) rises to 50°C? (b) Determine the temperature of the thermometer if the output voltage (13 marks) of the bridge is 0.3 V.