JEE PHYSICS MCQ: CURRENT ELECTRICITY

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A thermocouple is formed by two metals

X

and

Y

, metal

X

comes earlier to

Y

in Seebeck series. If temperature of hot junction increases beyond the temperature of inversion, then direction of current in thermocouple will be from

View answer and explanation

Correct option: D

Both

\left( \mathrm{b} \right)

and

\left( \mathrm{c} \right)

Option D (Both (b) and (c)) is correct because when the temperature exceeds the inversion temperature, the current direction reverses, flowing from X to Y through the hot junction and Y to X through the cold junction.

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