HomeworkLib
Question

26.42

A resistor and capacitor are connected in series to an emfsource. The time constant for the circuit is 0.870 rm s.a-A second capacitor, identical to the first, is added inseries. What is the time constant for this new circuit?b-In the original circuit a second capacitor,identical to the first, is connected in parallel with the firstcapacitor. What is the time constant for this newcircuit?
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1
We know the formula of the time constant for the RC circuitisT= RC = 0.870sa)When a capacitor is connected in series with another identicalcapacitor then the equivalent capacitance is Ceq =C / 2Then the effective time constant is T' =CeqR=(C/ 2)R=(1/2)RC=(1/2)T=(1/2)(0.870s) = 0.435sb)When a capacitor is connected in series with another identicalcapacitor then the equivalent capacitance is Ceq =2CThen the effective time constant is T' =CeqR=(2C)R=2RC=2T=(2)(0.870s)
answered by: Nakiya
0 0
Add a comment
Know the answer?
Add Answer to:
26.42
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Example 28.12 Charging a Capacitor in an RC Circuit Problem An uncharged capacitor and a resistor...

    Example 28.12 Charging a Capacitor in an RC Circuit Problem An uncharged capacitor and a resistor are battery, as shown in Figure 28.23. If emf = 12.0 V, C = 5.00 AuF, and R = 8.00 x 105 ?, find the time constant of the circuit, the maximum charge on the capacitor, and the charge and current as functions of time. in series to a Figure 28.23 The switch in this series RC circuit, open for times t> , is...

  • It's my fourth time asking this question. Please get it right this time. A battery with...

    It's my fourth time asking this question. Please get it right this time. A battery with an emf of V=100 volts is connected in series with a resistor of R=600000 ohms and an air filled parallel plate capacitor of capacitance C=18 microfarads a. Determine the energy stored in the capacitor when it is fully charged. 0.09 J The spacing between the capacitor plates is suddenly increased (in a time short compared to the time constant of the circuit) to four...

  • If an 80 mH inductor is in series with a 220 Ω resistor in a circuit...

    If an 80 mH inductor is in series with a 220 Ω resistor in a circuit with a source frequency of 1000 Hz, what will be the phase angle (rounded) of the current with respect to the voltage? A. 48° B. 66° C. 50° D. 70° A 10 mH inductor and a 100 Ω resistor are connected in parallel. The circuit is supplied with 24 VAC at 2000 Hz. What is the total circuit current (rounded)? A. 0.29 A B....

  • 45) Two resistors with resistances of 5.02 and 9.00 are connected in parallel. A 4.0-12 resistor...

    45) Two resistors with resistances of 5.02 and 9.00 are connected in parallel. A 4.0-12 resistor is then connected in series with this parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination. What is the current through (a) the 4.0-22 resistor and (b) the 5.0-92 resistor? 58) If V = 40 V and the battery is ideal, what is the potential difference across R1 in the figure? R; = 102 Rz=2022 ? R =3 2017 w...

  • 48. If a 5.6pF capacitor, a 49.3pF capacitor and a 35.5pF capacitor are all connected in...

    48. If a 5.6pF capacitor, a 49.3pF capacitor and a 35.5pF capacitor are all connected in series, then what is the total capacitance of this series combination in pico Farads? 50. If the Thevenin equivalent for a circuit is a 5V voltage source in series with a 5.3kΩ resistor, then what is the Norton equivalent current for this circuit in milliamps? 51. If the Norton equivalent for a circuit is a 2.2mA current source in parallel with a 23kΩ resistor,...

  • Two identical circuits have a capacitor in series wl a resistor In circuit A, the resistor...

    Two identical circuits have a capacitor in series wl a resistor In circuit A, the resistor has resistance R, while in Ercit B, its resistance is 4R. The capacitors are identical. Each capacitor begins fully charged, and each Ürcuit is open. When each circuit is connected, capacitor will fully discharge If a time t is required for ar cit A s capacitor. to holly discharge what time will be required for circuit B's capacitor to do the same?

  • 1. A 450 nF capacitor is initially uncharged. The capacitor is connected in series with a...

    1. A 450 nF capacitor is initially uncharged. The capacitor is connected in series with a 2,500  resistor and a 6.00 V ideal battery. The circuit is “closed” allowing current to flow and the capacitor to start charging. a. What is the time constant of this RC circuit? b. What is the current through the resistor when the circuit is first “closed”? c. How much time is required for the voltage across the capacitor to reach 5.00 V? d....

  • Mastering Physics ± PSS 30.1: Inductors in Circuits

    Learning Goal: To practice Problem-Solving Strategy 30.1: Inductors in Circuits.A circuit has a 3.9 battery connected inseries with a switch. When the switch is closed, the battery powers two paths in parallel, one of which has a resistor of resistance = 90 in series with an inductor of inductance = 1.3×10−2 , while the other has a resistor of resistance = 430 . What is the current supplied by the battery at a time = 0.3 after the switch is...

  • A 7.0 kW resistor is in parallel with a 8.4 kW resistor. This parallel portion of...

    A 7.0 kW resistor is in parallel with a 8.4 kW resistor. This parallel portion of the circuit is in series with a 10.0 V capacitor and a 780 mF capacitor. a) you replace the two resistors with a single resistor that will give the same effect. What does this new circuit look like and what is the value of the resistor? b) How long will it take the capacitor to charge to 50% of its maximum? c) At this...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT