FiskiranZeka
- 23
- 0
Solving Voltage Capacitors: Step-by-Step Guide
- Thread starter FiskiranZeka
- Start date
-
- Tags
- Capacitors Voltage
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
6 replies · 3K views
- 9,621
- 9
Welcome to PF,FiskiranZeka said:
That's not the way it works here. We will help you through your homework, but we won't do it for you.
What have you tried thus far?
FiskiranZeka
- 23
- 0
You are asking how i treid to solve this right ?
So, i explain;
q=V.C
3C + C --> 4C
q = 4C. V1
On the Upper Wire, there is 10 Voltage
On the Upper Wire, there is Tottal 4C + 1C --> 4/5 C
On the Upper Wire,
Q= 4C.V1 or 4/5C.Vtotal
( Vtotal = 10 Volt )
So, V1= 2 Volt,
V1/V2 = 1/4
So V2=8 Volt,
On the downside Wire,
above Cx is 8 Voltage,
So above 2C must be 2 Voltage, because 2+8 = 10 Volt ( Total Voltage )
q on the downside wire is;
q= V2.Cx or q = 2C. ( Voltage of 2C )
So, V2.Cx = 2C. ( Voltage of 2C )
V2 = 8 Volt,
8.Cx = 2C . 2Volt
Cx = 1/2 is the wrong answer, what i have found...
So, i explain;
q=V.C
3C + C --> 4C
q = 4C. V1
On the Upper Wire, there is 10 Voltage
On the Upper Wire, there is Tottal 4C + 1C --> 4/5 C
On the Upper Wire,
Q= 4C.V1 or 4/5C.Vtotal
( Vtotal = 10 Volt )
So, V1= 2 Volt,
V1/V2 = 1/4
So V2=8 Volt,
On the downside Wire,
above Cx is 8 Voltage,
So above 2C must be 2 Voltage, because 2+8 = 10 Volt ( Total Voltage )
q on the downside wire is;
q= V2.Cx or q = 2C. ( Voltage of 2C )
So, V2.Cx = 2C. ( Voltage of 2C )
V2 = 8 Volt,
8.Cx = 2C . 2Volt
Cx = 1/2 is the wrong answer, what i have found...
- 9,621
- 9
Everything looks good up until this point. Your next statement is incorrect:FiskiranZeka said:
Picking up from your previous like you have:
[tex]8C_x = 4C[/tex]
Hence,
[tex]C_x = \frac{1}{2}{\color{red}\bold{C}}[/tex]
You still need to eliminate the unknown Capacitance (C). Do you follow?
FiskiranZeka
- 23
- 0
Yeah sorry,
my calculations say -->
Cx = 1/2 C
But correct answer is Cx = 8C
As the answer has Unknown Capacitance (C) too...
We don't need to eliminate C...
No problem... Just need to find how many C is equal to Cx.
my calculations say -->
Cx = 1/2 C
But correct answer is Cx = 8C
As the answer has Unknown Capacitance (C) too...
We don't need to eliminate C...
No problem... Just need to find how many C is equal to Cx.
- 9,621
- 9
After discussing this problem with another Homework Helper, we both agree that the correct answer is Cx = 1/2*C as you have.FiskiranZeka said:
Wherever you got the 'correct' answer of Cx = 8*C is incorrect.
FiskiranZeka
- 23
- 0
Hootenanny said:
Yeayy ! Thank you !
I have also doubt that 8C Could be wrong, but i couldn't be sure, 'cos it's Physic Book's answer. Anyway, now I am glad
// Problem Solved.