Engineering Board Exam Reviewer · Physics · hard
A capacitor is charged through a resistor from a 12 V source. What is the capacitor voltage after one time constant?
- 4.41 V
- 7.59 V
- 6.00 V
- 12.00 V
Answer
B. 7.59 V
Solution
V = V0(1 - e-t/ ) = 12(1 - e-1) = 12(0.632) = 7.59 V.
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