Exam-style question
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In an RC circuit, if the resistance is doubled while keeping the capacitance constant, what happens to the time constant?.
- A.It doubles
- B.It halves
- C.It remains the same
- D.It quadruples
Model answer
What a good answer should say
- It doubles
Explanation
Why this works
The time constant (τ) is directly proportional to resistance (R). Therefore, if the resistance is doubled, the time constant also doubles.
Common mistake
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