Exam-style question
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What is the time constant (τ) in an RC circuit?.
- A.The product of resistance and capacitance
- B.The sum of resistance and capacitance
- C.The ratio of charge to voltage
- D.The difference between voltage and current
Model answer
What a good answer should say
- The product of resistance and capacitance
Explanation
Why this works
The time constant (τ) is defined as the product of resistance (R) and capacitance (C) in an RC circuit, indicating how quickly the circuit charges or discharges.
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