is my solution ok?

T

transgalactic

Banned

• Sep 8, 2009

• #1

i have this question and solution

https://i27.tinypic.com/4jxj7o.jpg

i tried to solve it like this example
https://i26.tinypic.com/xghb4g.jpg

i tried to imagine it in this way:
https://i28.tinypic.com/24pwdvl.jpg
[latex]C_1=\frac{2\epsilon_0}{d-a}\\[/latex]
[latex]C_2=\frac{k\epsilon_0}{d}\\[/latex]
[latex]C_3=\frac{2\epsilon_0}{d-a}\\[/latex]
[latex]\frac{1}{C}=\frac{1}{C_1}+\frac{1}{C_2}+\frac{1}{C_3}[/latex]
is it ok?

 

S

skyhawk

New Member

• Sep 8, 2009

• #2

Your answer is different from the sample solution, so why would you believe that it is correct?

There is no electric field in the conductor. The effect of the conductor is to reduce the size of the effective gap between the plates.

 

T

transgalactic

Banned

• Sep 8, 2009

• #3

thanks
i understand my error

 

EN0

Member

• Nov 26, 2009

• #4

How do you initate LaTeX on this forum? I know in several other forums it's usually [tex][/tex] or [MATH][/MATH], but what is used for Electro-Tech?

Thanks,

Austin

 

Sceadwian

Banned

• Nov 26, 2009

• #5

I'm not so sure they have a Latex addon for the forum. You'd have to ask Electromaster in the feedback forum. I don't think I've ever seen someone use it at least. Would be a nice addition.

 

Last edited: Nov 26, 2009

Nigel Goodwin

Super Moderator

Most Helpful Member

• Nov 26, 2009

• #6

As far as I'm aware LaTeX has been implemented for a LONG time - unless it disappeared after an update?.

 

EN0

Member

• Nov 26, 2009

• #7

LaTeX is implemented, because transgalactic used it in his first post to show the equations. However, it would be nice to know what denotions he used to initiate it, perhaps he will tell us.

Austin

 

Sceadwian

Banned

• Nov 26, 2009

• #8

Nigel, food for thought... A 'feature' has not been implemented unless the users that have it available know about it =O

What current people will say to those that develop nanotechnology in the future.. "So that's how you did that!" All the building blocks are here now, but not a lot of people know how to use them..

 

Last edited: Nov 26, 2009

H

Hayato

Member

• Nov 27, 2009

• #9

ElectroNerdy said:

How do you initate LaTeX on this forum? I know in several other forums it's usually [tex][/tex] or [MATH][/MATH], but what is used for Electro-Tech?

Thanks,

Austin

Click to expand...

Try [l a t e x] and [/ l a t e x] without the spaces.

 

Last edited: Nov 27, 2009

EN0

Member

• Nov 28, 2009

• #10

Testing...1...2...3...

[latex]\frac{1}{2 \pi f C} = X_c[/latex]

Austin

 

Last edited: Nov 28, 2009

P

Pommie

Well-Known Member

Most Helpful Member

• Jan 27, 2010

• #11

Did you not read the posts above? You use [latex] [/latex].

Mike.

 

Last edited: Jan 27, 2010