A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0°C and the other is steam at 100°C, the millivoltmeter reads 4mV. What is the maximum temperature which this arrangement can measure
-
A.
100(^o)C -
B.
248(^o)C -
C.
250(^o)C -
D.
350(^o)C
Correct Answer: Option C
Explanation
t(_theta) – t(_o) = 10,
t(_{100}) – t(_o) = 4
| θ | = | t(_theta) – t(_o)
t(_{100}) – t(_o) |
× | 100 |
| 10 4 |
× | 100 | = | 250°C |
There is an explanation video available below.