Electricity and magnetism - find resistance

145

Ranadeep Roy ·2013-07-20 19:37:24

R/2

229

Dwijaraj Paul Chowdhury ·2013-07-20 22:02:22

R₀/2 ...irodov right? :p

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Anurag Ghosh R/2......Assume a battery between those 2 points and apply the superpostion principle....
Upvote·0· Reply ·2013-07-21 18:53:32
Dwijaraj Paul Chowdhury and a bit of symmetry as well ;)
Upvote·0· Reply ·2013-07-21 18:59:03
Shreya Sharma But how do you get R/2 ?
Upvote·0· Reply ·2013-07-22 02:58:32
Dwijaraj Paul Chowdhury assuming current I was given to a box...due to symmetry we can say I/4 gets divided into the 4 sides ....so basically writing kcl we get IR[ss]Equivalent[/ss]=2(I/4)R[ss]Equivalent[/ss]
Upvote·0· Reply ·2013-07-22 22:18:57
Dwijaraj Paul Chowdhury the resistance in the RHS should not be equivalent...its the given resistance R
Upvote·0· Reply ·2013-07-22 22:20:14
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481

Anurag Ghosh ·2013-07-21 19:07:08

Hmmmmm......similar type question was posted by another boy.......There resistance was R/3....

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Jeet Sen Sharma superimposition.!!! how....??
Upvote·0· Reply ·2013-07-25 05:30:30
Anurag Ghosh hehe...not superimposition its superposition......... Assume a battery of p.d V between A and B and current I flowing through them... 1st case current can enter from infinity enter A as I/4 2nd case current can come from infinity and leave B as I/4 net current=(I/4+I/4)=I/2 V=I/2*R.......As we assumed I current to be flowing..therefore resistance R/2...
Upvote·0· Reply ·2013-07-25 18:17:45
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find resistance