Current Electricity Part 1
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Question : 94 of 100
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The thermo e . m . f . of a thermo -couple is 25 µ V \ / ∘ C at room temperature. A galvanometer of 40 ohm resistance, capable of detecting current as low as 10 − 5 A , is connected with the thermo couple. The smallest temperature difference that can be detected by this system is
[AIEEE 2003]
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