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Heating and Chemical Effect of Current — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsHeating and Chemical Effect of Current1 Mark
MCQ
The expression for thermo $e.m.f.$ in a thermocouple is given by the relation $E=40 \theta -\frac{\theta^2}{20},$ where $\theta$ is the temperature difference of two junctions. For this, the neutral temperature will be
  • A
    $100^{\circ} \mathrm{C}$
  • B
    $200^{\circ} \mathrm{C}$
  • C
    $300^{\circ} \mathrm{C}$
  • ✓
    $400^{\circ} \mathrm{C}$
✓

Answer

Correct option: D.
$400^{\circ} \mathrm{C}$
$400^{\circ} \mathrm{C}$

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