Current Electricity(find equivalet resistance)

is it 4 ohm?

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

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

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.