Question

R
AIIMS 2012
The value of current i for the given circuit is --

(2) 5 A
(1) 10 A
(3) 2.5 A (4) 20 A​

Answer 1

Req is 5/2 ohm and from ohm's rule V=i×R then I is 10 A

Answer 2

Answer:

10 A

Explanation:

no current will flow through the 5 ohms in the middle as the Wheatstone bridge is balanced.

two 5 ohms in the top will have an effective resistance of 10 ohms

two 5 ohms in the bottom will have an effective resistance of 10 ohms

these two are in parallel so effective resistance will be 5 ohms

this 5 ohms and the 5 ohms at the lower part are parallel so effective resistance is 5/2 ohms

I = V/R=25/2.5=10 A