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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Jun 2008 10:43:45 IST
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find current in 5 ohm resistor.
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25 Jun 2008 10:48:55 IST
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i think da answer is 3amp,
is it correct??
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25 Jun 2008 10:57:02 IST
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use kirchoff's law
assuming the total current to be I drwan from positive end of 10 v cell.... it splits at the junction to i(towards 5 ohm and I - i towards 5 v )
now writing the Kirchoffs eqn for the voltage in loop having 10 v
we get
-5 i + 10 = so i = 2 amp
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25 Jun 2008 11:01:26 IST
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if da answer is 2amp,den da rt loop is not satisfied.
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25 Jun 2008 11:04:50 IST
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oh sorry didnt go to the right loop at all................plz chck the qn
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25 Jun 2008 14:34:27 IST
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USING SUPERSITION THEROEM
=3
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From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king.
MY BLOG
http://my.opera.com/vu2rje/blog/ |
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25 Jun 2008 20:39:03 IST
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chk the Question..
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. . . : : | | : : A T U L : : | | : : . . .
||~::~||THE ONLY THING YOU DON'T KNOW IS THAT WHICH YOU DON'T KNOW||~::~|| |
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25 Jun 2008 20:45:01 IST
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is it 1A?
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25 Jun 2008 21:00:42 IST
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The answer is 3A. Use nodal analysis. If U dont know how to use it, check this article-
http://www.goiit.com/posts/list/community-shelf-circuit-solving-was-never-so-easy-67415.htm
If u still dont get it, tell me. I will post the solution with diagram.
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The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.
It is during our darkest moments that we must focus to see the light.
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Posts:
Can marks really judge a student??
Some myths about Chemical Engineering.
(A must see for every student)
Back to goiit, this time with Baby Veerappan. :D |
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26 Jun 2008 00:11:13 IST
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post the sol with diagram plzzzzzzzzzzz
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27 Jun 2008 10:38:34 IST
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atul, the question is right. when u'll come to know the answer, u'll be shocked really. anyway, i m not going to tell the answer because many tricky ques r solved by seeing the answer. i know the answer only, not soln. waitng for it.
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27 Jun 2008 10:40:17 IST
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is it zero ?
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it is not important where u stand, but in which direction u are moving |
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27 Jun 2008 10:47:47 IST
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u r right ramyani, but can u solve it. obviously it is zero but it is not beleivable too.
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physicaly speaking , current choose the path of least resistance.
Internal resistance of batteries r very low. ( << 5 ohm ).
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it is not important where u stand, but in which direction u are moving |
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27 Jun 2008 11:40:40 IST
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it can be solved by superposition principle
first we consider only 5v battery..
entire current becuse of 5v battery will flow through 10v battery as it has
negligible resistance.and not through 5 ohm resistance
current distribution in two parellel resistance
i_1=\frac{r_2 }{r_1+r_2 } i
then we consider only 10v battery..
entire current becuse of 10v battery will flow through 5v battery but in
opposite sense as it has negligible resistance..and not through 5 ohm
resistance.
thus when we superimpose the two results..
we get zero current through 5 ohm resistance
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