Charge on capacitors in a circuit?

AI Thread Summary
To calculate the charge on capacitors in a circuit with a voltage of +28V and capacitance of 4.00uF, first determine the equivalent capacitance of the circuit. This involves treating the capacitors like a resistor network, allowing for the calculation of total charge. After finding the equivalent capacitance, the total charge can be calculated, and then the analysis can be reversed to find the charge and voltage across each capacitor step by step. The principles governing series and parallel configurations apply, particularly regarding voltage and charge distribution. Understanding these concepts is crucial for accurate calculations in capacitor circuits.
KingNothing
Messages
880
Reaction score
4
The voltage from point a to point b is +28V.
Each capacitor has a capacitance of 4.00uF (microfarads)

What is the best way to calculate the charge on each capacitor?
 

Attachments

  • capacitors.jpg
    capacitors.jpg
    3.6 KB · Views: 465
Physics news on Phys.org
Work like how you would for a resistor network. Find the equivalent capacitance then you can find the total charge. Then work your way back to the original circuit one step at a time, while finding the charge and voltage in each step. Its like working backwards from the equivalent capacitance to the original circuit. Remember the same rules that apply for series and parallel networks (in terms of voltage and current or charge in this case) will work here.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Why Do Capacitors Behave Differently in Series and Parallel Configurations?
Replies
20
Views
2K
Final Charge of a Capacitor in a Circuit with Capacitors and Resistors
Replies
9
Views
2K
Ranking charge stored on three capacitors by a battery
Replies
6
Views
3K
Capacitor Circuit Analysis: How to Find Voltage Across Resistors
Replies
15
Views
2K
Why can we model spherical capacitor with two dielectrics as two capacitors in series?
Replies
4
Views
2K
Capacitance of a parallel plate capacitor with a metal plate kept inside
Replies
11
Views
3K
Charge upon a parallel plate capacitor
Replies
18
Views
3K
Capacitor Questions Charging and Discharging
Replies
4
Views
3K
Determining Inductance L in an LC Circuit
Replies
5
Views
2K
LC oscillations - two capacitors and an inductor
Replies
15
Views
531

Hot Threads

Recent Insights

Back
Top