The thermo-emf of a thermocouple is at room temperature. A galvanometer of resistance, capable of detecting current as low as is connected with the thermocouple. The smallest temperature difference that can be detected by this system is |
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a) |
b) |
c) |
d) |
The thermo-emf of a thermocouple is at room temperature. A galvanometer of resistance, capable of detecting current as low as is connected with the thermocouple. The smallest temperature difference that can be detected by this system is |
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a) |
b) |
c) |
d) |
(a) Thermo-emf of thermocouple Let be the smallest temperature difference. Therefore, after connecting the thermocouple with the galvanometer, thermo-emf Potential drop developed across the galvanometer |