What is the mistake in my series capacitors homework?

AI Thread Summary
The discussion revolves around a student's confusion regarding the calculation of total voltage in a series capacitor problem. The student initially misapplies the voltage formula, leading to incorrect results. Another participant clarifies that the effective capacitance for capacitors in series is calculated using the reciprocal formula, resulting in an effective capacitance of 6C/11. This effective capacitance can then be substituted back into the voltage equation to derive the correct total voltage. The explanation emphasizes that the total voltage relates directly to the individual voltages across the capacitors when connected in series.
Physics news on Phys.org
V = q/c
so v = q/c + q/2c + q/3c
q/c(1+1/2+1/3)
q/c (11/6)
hope this helps
 
So total V is (11/6)q/c ? Can you explain how that is V1?
 
Instinctlol said:
So total V is (11/6)q/c ? Can you explain how that is V1?
I can't get you. Actually is 11/6 times the V
 
Capacitors are connected in series. So the effective capacitance is
1/Cs = 1/C + 1/2C + 1/3C
= 11/6C
Cs = 6C/11
Now substitute this value for C for the equation V = 11/6(Q/C) you ll get Q/C which is nothing but V or V1
Hope you got it now
 

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

Unknown value of added resistor in parallel
Replies
4
Views
3K
Electric Potential Problem - Fixed Template
Replies
2
Views
1K
Solve Unknown Capacitance from Series Capacitors & Battery Charge
Replies
3
Views
4K
Capacitor Questions Charging and Discharging
Replies
4
Views
3K
Energy in capacitor at steady state
Replies
10
Views
2K
Solving a circuit using both the mesh and node analysis
Replies
3
Views
2K
(Answered) Finding new potential difference after switch is closed?
Replies
23
Views
12K
Effects of capacitors on potential difference
Replies
7
Views
2K
Electric Potential Due to point charges
Replies
1
Views
5K
Find the voltage and energy for each capacitor
Replies
12
Views
2K

Hot Threads

Recent Insights

Back
Top