Current Electricity(find equivalet resistance)

QUESTION: Each resistance is equal to r ohm. Find equivalent resistance between A and B.

no...its not 4 ohm.

for the first question,
the above 2 resistors (3 ohm) are shorted so it will just be both 2 ohms in series..thats wat i think.

see hcv for the second one...its simple

yes...u r ryt..srry

the 2nd one....answer is coming R....(taking each resistance as R)

y dnt u try doing the 2nd question?

no debosmit its not R.
You have to find the shortest path that the current is flowing through and then calculate.
the answer is 5R/6.

Why dont u write down the solution buddy?!

@subhomoy da: that`s what i`ve done....but my calculations maybe wrong....

yes,my calculations are wrong....its coming 5r/6...sry about that

cool!! nyc!! :)

You can use either of the perpendicular or parallel symmetry to argue that.