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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 series combination of n₁ capacitors, each of value C₁, is charged by a source
- The maximum kinetic energy of the photoelectrons depends only on
- The name of ions knocked out from the hot surface is
- A tuning fork gives 4 beats with 50 cm length of a sonometer
- Energy of photon whose frequency is 10¹² MHz will be
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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