| ⇦ | 
| ⇨ |
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
Related Questions: - Resistances n, each r Ω, when connected in parallel give an equivalent resistance
- A radioactive substance has a half-life of four months. Three-fourth of substance
- Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å.
- A particle falls towards earth from infinity. Its velocity on reaching the earth
- A high altitude, a body explodes at rest into two equal fragments with one fragment
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Resistances n, each r Ω, when connected in parallel give an equivalent resistance
- A radioactive substance has a half-life of four months. Three-fourth of substance
- Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å.
- A particle falls towards earth from infinity. Its velocity on reaching the earth
- A high altitude, a body explodes at rest into two equal fragments with one fragment
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply