Engineering Board Exam Reviewer · Time Response of Reactive Circuits · easy
The switch in the circuit shown closes at t=0 with the capacitor initially uncharged. The source is 6 V, R=10 k , and C=1, F. Find the time constant of the circuit.
- 50 ms
- 5 ms
- 10 ms
- 20 ms
Answer
C. 10 ms
Solution
=RC=(10 k )(1, F)=10 ms.
More Time Response of Reactive Circuits questions
- A 10, F capacitor charged to 50 V is connected through a resistor across an identical uncharged 10, F capacitor. How much energy is…
- An RC circuit has a time constant of 0.1 s. After the switch connects it to a dc source, how long does the (initially uncharged) capacitor…
- A 5, F capacitor charged to 100 V discharges through a 2 M resistor. What is the capacitor voltage 10 s after the discharge begins?
- The capacitor in the circuit shown already holds 6 V (same polarity as the source) when the switch closes at t=0 (V=24 V, R=10 k , C=10…
- In the circuit shown the capacitor is uncharged and the switch closes at t=0 (V=30 V, R1=2 k , R2=3 k , C=10, F). Find the capacitor…
- A 0.2 H coil carrying 2 A is suddenly switched so that its current must flow through a total resistance of 50, (no source). What is the…
- If the resistance in a series RC charging circuit is doubled while C is unchanged, the time constant
- In an RC charging circuit, the current at t=3 is what percentage of the initial current?
- A 100, F capacitor charged to 100 V discharges through a 10 k resistor. How long does it take for the voltage to fall to 10 V?
- A 100, resistor is in series with a 0.5 H inductor and a dc source. After the switch closes, how long does it take for the current to…