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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
- In Young’s double silt experiment, 12 fringes are observed to be formed
- A nucleus of uranium decays at rest into nuclei of thrrium and helium. Then
- A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle
- The wavelength of first line of Balmer series is 6563Å. The wavelength of first line
- A parallel beam of light of wavelength λ is incident normally on a narrow slit
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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