JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Application +4 | -1

In a thermo-couple, one junction which is at

0\,^\circ C

and the othe at

t{\mkern 1mu} {\mkern 1mu} ^\circ C

the emf is given by

E = a{t^2} - b{t^2}

. The neutral temperature is given by

View answer and explanation

Correct option: B

2\,\,a/3\,b

Option B (

2\,\,a/3\,b

) is correct because the neutral temperature is found by setting the derivative of the emf with respect to temperature equal to zero.

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