MENU

The rate of increase of thermo-e.m.f. with temperature at the neutral temperature

The Rate Of Increase Of Thermoemf With Temperature At The Physics Question

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:

  1. A focal length of a lens is 10 cm. What is power of a lens in dioptre?
  2. Two waves represented by following equations are travelling in same medium
  3. The given graph represents V-I characteristic for a semiconductor device
  4. If the binding energy of the electron in a hydrogen atom is 13.6 eV, the energy
  5. A car of mass m starts from rest and accelerates so that the instantaneous

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*