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QPages 196-197: Q8: HC Verma: Concepts of Physics - Volume 2 Electric Current in Conductors Pages 196-197: Q8 Solution: Two resistors R and 2R are connected in series in an electric…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often incorrectly assume that thermal energy is inversely proportional to resistance or that current divides in series circuits. Remember that in a series connection, the current $I$ is identical through all components, so the heat generated $H = I^2Rt$ is directly proportional to the resistance $R$.
Two resistors R and 2R are connected in series in an electric circuit. The thermal energy developed in R and 2R are in the ratio ___________.
Multiple Choice Options
- A 1:02
- B 2:01
- C 1:04
- D 4:01
Step-by-Step Verified Solution
**Answer:** (a) 1:2.
**Step-by-Step Explanation:**
In series, same current. H = I_Rt. H_/H_ = R/2R = 1/2.
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