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QPage 217: Q3: HC Verma: Concepts of Physics - Volume 2 Thermal and Chemical Effects of Electric Current Page 217: Q3 Solution: When a current passes through a resistor, its temperature…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often label the temperature rise of a resistor as adiabatic, assuming the electrical energy stays entirely as internal energy; however, any temperature difference with the surroundings forces heat to be conducted, convected, or radiated away, violating the no‑heat‑exchange condition of an adiabatic process.

When a current passes through a resistor, its temperature increases. Is it an adiabatic process?

Step-by-Step Verified Solution

**Answer:** No, it is not an adiabatic process. **Step-by-Step Explanation:** In an adiabatic process, there is no exchange of heat between the system and its surroundings. When current passes through a resistor, its temperature rises above the surroundings, and heat is exchanged with the surroundings (radiated away). Hence, it is not adiabatic [citation:12].

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