Solving Q=Q0(e^(-t/RC)): Need Help for Part C

  • Thread starter Thread starter flyers
  • Start date Start date
AI Thread Summary
The discussion revolves around solving the equation Q = Q0(e^(-t/RC)) for a specific homework problem. The user seeks clarification on the value of R to use in part C, noting that R2 and R3 are in series when the switch opens, leading to an answer of 0.166 seconds. There was initial confusion regarding the configuration of R2 and R3, as the user mistakenly thought they were in parallel. Ultimately, the user acknowledges the correct series connection, which resolves their confusion. Understanding the circuit configuration is crucial for solving the problem accurately.
flyers
Messages
28
Reaction score
0

Homework Statement


nwbpko.png



2. Homework Equations

Q= Q0(e^(-t/RC))

The Attempt at a Solution



I need help for part C.I am confused as to what value I should put for R.

The answer is supposed to be .166 seconds
 
Physics news on Phys.org
R2 and R3 are in series when the switch opens. Did you get parts a) and b) right?

Find when Q=.25*Q0
 
I was confused because I thought R2 R3 were connected in parallel, but I see why they are in series now. Thanks
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Why can we add impedances in series?
Replies
4
Views
1K
A Capacitor with initial charge
Replies
3
Views
3K
Finding R(t) in discharging RC circuit
Replies
4
Views
2K
Set up the differential equation showing the voltage V(t) for this RC circuit
Replies
19
Views
4K
Calculating Charge and Time in a Discharging RC Circuit
Replies
3
Views
2K
Solve RC Circuit Problem: Find Time of Current > 50mA
Replies
9
Views
3K
Need help finding current on RC circuit
Replies
5
Views
7K
What is the charge on each capacitor in a circuit with capacitors in parallel?
Replies
6
Views
2K
How long after the switch is closed does the voltage across
Replies
4
Views
3K
Need help with an Electric Field Question
Replies
1
Views
932

Hot Threads

Recent Insights

Back
Top