Moderate
The time constant and R-C circuit may also be defined as the time during which the charging current falls to ________ percent of its initial maximum value
Correct answer: A. 37
- A. 37
- B. 42
- C. 63
- D. 73
Explanation
In an RC circuit, charging current follows i = I₀e^(-t/RC), so at one time constant it becomes e^-1, or about 36.8% of its initial value. This is rounded to 37%.
Last updated
Practise Circuit Analysis
394 free Circuit Analysis MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.