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25 Jun 2008 10:43:45 IST
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find current in 5 ohm resistor.
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pawan modi
mechanical enginerring
national institute of technology, jamshedpur
email-id pawanplv00@gmail.com
mobile 09546411326 |
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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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Tarin Bansal
3rd year undergraduate
B.E. (Hons.) Electronics & Instrumentation
BITS-Pilani Goa Campus
Check out - www.theideacauldron.com |
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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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pawan modi
mechanical enginerring
national institute of technology, jamshedpur
email-id pawanplv00@gmail.com
mobile 09546411326 |
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27 Jun 2008 10:40:17 IST
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is it zero ?
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NIT silchar electrical engineering |
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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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pawan modi
mechanical enginerring
national institute of technology, jamshedpur
email-id pawanplv00@gmail.com
mobile 09546411326 |
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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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NIT silchar electrical engineering |
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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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B.Tech CSE, ISMU |
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27 Jun 2008 13:47:38 IST
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hey is the answer 1 A ???
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27 Jun 2008 14:51:37 IST
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superposition theorem
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NIT silchar electrical engineering |
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