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Question 31694
JEE Physics · Hard

Current Electricity: Seebeck Effect MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Seebeck EffectHardQuestion 31694

Question

The Seebeck effect produces an EMF when:
  1. A
    A capacitor is charged
  2. B
    Two dissimilar metals are joined and the junctions are at different temperatures
    Correct
  3. C
    A resistor heats up
  4. D
    Current flows through a magnetic field

Correct answer

Two dissimilar metals are joined and the junctions are at different temperatures

Explanation

Temperature gradient across a metal junction creates an EMF (thermoelectric effect). This is the principle of thermocouples used to measure temperature.

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