Home » Ask & Discuss » Physics. » Electricity « Back to Discussion



Electricity

newkid newkid's Avatar
Cool goIITian

Joined: 27 Nov 2007
Post: 54
7 Jan 2008 19:59:52 IST
0 People liked this
14
678 View Post
equivalent capacitance
None

1)find the equivalent capacitance between A and B .....(see figure)
 
 


Share this article on:

Comments (14)

Tarin Bansal's Avatar

Blazing goIITian

Joined: 27 Jul 2007
Posts: 3134
7 Jan 2008 20:54:21 IST
1 people liked this

I am getting 3C/4. Please tell me if I am correct and if I am, I will post the solution.

Blazing goIITian

Joined: 29 Sep 2007
Posts: 487
7 Jan 2008 21:03:38 IST
0 people liked this

yep i think he is correct
Umang's Avatar

Blazing goIITian

Joined: 12 Dec 2006
Posts: 926
7 Jan 2008 21:04:36 IST
1 people liked this

well  my answer is 6C/11
Ist 3 from left are in parallel =3c
so r 4th and 5th =2c
and the net are in series
so 1/cnet=1/3c+1/2c+1/c
 
harsh _27's Avatar

Blazing goIITian

Joined: 21 Apr 2007
Posts: 897
7 Jan 2008 21:07:24 IST
1 people liked this

3c/4 is correct.......umang the current won't flow through 4th and 5th capacitors ...............
Umang's Avatar

Blazing goIITian

Joined: 12 Dec 2006
Posts: 926
7 Jan 2008 21:10:13 IST
0 people liked this

yes i got it !
thanks !!!
Tarin Bansal's Avatar

Blazing goIITian

Joined: 27 Jul 2007
Posts: 3134
7 Jan 2008 21:19:00 IST
0 people liked this

Is 3C/4 correct?

Blazing goIITian

Joined: 29 Sep 2007
Posts: 487
7 Jan 2008 22:42:01 IST
0 people liked this

ya dude you are correct
the other two capacitors are shorted out
Tarin Bansal's Avatar

Blazing goIITian

Joined: 27 Jul 2007
Posts: 3134
7 Jan 2008 22:44:02 IST
0 people liked this

Yes. The 2 capacitors are shorted out.
newkid newkid's Avatar

Cool goIITian

Joined: 27 Nov 2007
Posts: 54
8 Jan 2008 17:36:10 IST
0 people liked this

current follows least resistance path..
higher the resistance lower the current...

but charge???
higher the capacitance higher will be the charge...

How can it be shorted....
no current here (i suppose) as capacitor offers infinite resistance to DC
swapnil jadhav's Avatar

New kid on the Block

Joined: 27 Dec 2007
Posts: 17
8 Jan 2008 17:42:58 IST
0 people liked this

3c/4
Gaurav |spideyunlimited| Ragtah's Avatar

Moderator
Joined: 16 Dec 2006
Posts: 3373
8 Jan 2008 17:51:37 IST
1 people liked this

I got 3C/4
there is shorting at one place.
So 3C and C are in series.

@newkid, we assume the connection is connected to an emf source.. for the capacitor to be charged we require current first dont we.
swapnil jadhav's Avatar

New kid on the Block

Joined: 27 Dec 2007
Posts: 17
8 Jan 2008 17:53:56 IST
1 people liked this

potential diff betn the series combination of cap 4 and 5 is 0. therefore acc to q=cv  where v is 0 we get charge =0 so , the charge accumulatd on 4 and5 =o 
swapnil jadhav's Avatar

New kid on the Block

Joined: 27 Dec 2007
Posts: 17
8 Jan 2008 17:55:18 IST
1 people liked this

acc is ACCORDING  not acceleration

New kid on the Block

Joined: 30 May 2009
Posts: 1
22 Aug 2009 22:15:57 IST
0 people liked this

Some one explain fully and properly please....I am not able to understand........waiting eagerly




Quick Reply


Reply

Some HTML allowed.
Keep your comments above the belt or risk having them deleted.
Signup for a avatar to have your pictures show up by your comment
If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team
Free Sign Up!

Preparing for IIT-JEE ?

Arihant Revision Package for IIT JEE - Books, Practice Tests + Rank Predictor


@ INR 1,995/-

For Quick Info

Name

Mobile No.

Find Posts by Topics

Physics.

Topics

Mathematics.

Chemistry.

Biology

Parents

Board

Fun Zone

Sponsored Ads