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QPage 196: Q13: HC Verma: Concepts of Physics - Volume 2 Electric Current in Conductors Page 196: Q13 Solution: Sometimes it is said that "heat is developed" in a resistance…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often mistake the phrase “heat is developed” for a violation of the definition of heat as energy transferred due to a temperature difference, assuming heat cannot be created inside a resistor. Emphasize that electrical work is converted into internal (thermal) energy of the conductor, which then can flow out as heat; the statement refers to this conversion, not to spontaneous heat creation.
Sometimes it is said that "heat is developed" in a resistance when there is an electric current in it. Recall that heat is defined as the energy being transferred due to temperature difference. Is the statement in quotes technically correct?
Step-by-Step Verified Solution
**Answer:** Yes, the statement is technically correct in the context of electrical circuits.
**Step-by-Step Explanation:**
"Heat is developed" means electrical potential energy is converted into internal energy of the resistor. The resistor's temperature rises, and it transfers heat to the surroundings. The terminology is standard in physics and is technically correct [citation:8].
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