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The rate of increase of thermo-e.m.f. with temperature at the neutral temperature of a thermocouple
Options
(a) is positive
(b) is zero
(c) depends upon the choice of the two materials of the thermocouple
(d) is negative
Correct Answer:
is zero
Explanation:
We have, e = at + bt²
de/ dt = a + 2bt
At neutral temperature,
t = – a / 2b
de/ dt = 0
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A plumb line is suspended form a ceiling of a car moving with horizontal acceleration
- The physical quantities not having same dimensions are
- Two parallel metal plates having charges +Q and -Q face each other at a certain
- The work function of a substance is 4.0 eV. The longest wavelength of light
- A simple pendulum performs simple harmonic motion about x = 0 with an amplitude
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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