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Electricity

Blazing goIITian

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2 Oct 2008 09:41:01 IST

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Equivalent Resistance

None

Find the Equivalent resistance between A and B.

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Comments (5)

carpe dium

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2 Oct 2008 09:53:24 IST

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cud you give the answer ?????????

Shivam Mishra

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2 Oct 2008 11:49:43 IST

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Infinite resistance is same as open circuit ,

hence the circuit simplifies to ,

{(1+1+1) parallel (1) }+1+1

=0.75+2 = 2.75 ohms

The answer is 2.75 ohms

Catherine

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2 Oct 2008 12:01:02 IST

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Since it is an infinite resistance series. Take the equvalent resistance to be X .

since it is an infinite series (parallel combo) take the repeating part as X. ie, u'll get it as X in parallel with 1 ohm. this combination in series with two 1 ohm resistors.

ie,

X /(X+1) + 1+1 = X

X + 2(X+1) = X(X+1)

=> X² - 2X - 2 = 0

=> X = 2.732 or -0.732

ignore -ve value

so the ans will be 2.732 ohm

Gaurab Mandal

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2 Oct 2008 12:38:22 IST

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Click on the above link-u will come to know everything

I could have solved the sum but its difficult to draw the figure

Rate me if u find it useful....

The link is:

http://www.crbond.com/papers/ent2-3.pdf

anupa sudhana

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2 Oct 2008 12:57:05 IST

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considerin d infinite resistances equivalent as x. then...(1ohm+1ohm+{xohms and 1ohm in parallel})=x
by solving this v get x=2.732 ohms or -0.732.
neglecting the negative values..
we get equivalent resistance=x=2.732..

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