Verified Solution • 2025–26 Session moderate

QPages 217-218: Q4: HC Verma: Concepts of Physics - Volume 2 Thermal and Chemical Effects of Electric Current Pages 217-218: Q4 Solution: The heat developed in a system is proportional to the current…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often read “heat proportional to current” and assume Joule heating satisfies it, overlooking that Joule heat follows $Q=I^{2}R$ (quadratic in $I$). Remember only effects like the Peltier ($Q=\Pi I$) are linear in current; verify the exact current dependence before selecting the answer.

The heat developed in a system is proportional to the current through it.

Multiple Choice Options

  • A a) True for Peltier effect,
  • B b) True for Joule heating,
  • C c) True for Seebeck effect,
  • D d) False for all thermal effects

Step-by-Step Verified Solution

**Answer:** (b) It can be any of the three heats mentioned above. **Step-by-Step Explanation:** The heat developed could be Joule heat, Peltier heat, or Thomson heat.

All Questions in this Chapter

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