Opens at t=0 s 100 V 60 Ω Μ 40 Ω . 10Ω 2.0 με :
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
The switch in the figure(Figure 1) has been closed for a very long time.
Part(a).
What is the charge on the capacitor?
Express your answer using two significant figures.
Part(b).
The switch is opened at t=0s. At what time has the charge on the capacitor decreased to 30% of its initial value?
Express your answer using two significant figures.
Transcribed Image Text:This diagram represents an electrical circuit containing the following components:
1. **Voltage Source**: A 100 V power source is connected at the top left corner, indicating the source of electrical energy for the circuit.
2. **Switch**: Positioned right after the 100 V source, the switch opens at \( t = 0 \, \text{s} \), which is the initial time when the circuit begins operating under new conditions.
3. **Resistors**:
- A 60 Ω resistor is connected in series just after the switch.
- A 40 Ω resistor is connected in series further along the circuit after the 60 Ω resistor.
- A 10 Ω resistor is in parallel with the 40 Ω resistor and the capacitor.
4. **Capacitor**: A 2.0 μF capacitor is placed in parallel with the 10 Ω resistor, implying it can store and release charge.
The circuit configuration suggests that it involves both series and parallel connections, highlighting potential analysis of transient response, where the capacitor will charge or discharge over time as the switch opens.
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