Find the value of current in the circuit.

Calculation:

The given circuit can be rearranged as 

Where the resistance of each resistors are 2 ohms and voltage applied is 2 V.

We can see that arm resistances R₁ ,R₂,R3,R4

R₁R3 = R₂R₄

the above circuit is a wheat stone bridge.

The current flowing through the middle branch would be zero.

Net resistance "R" will be =  (2 + 2) II (2 + 2)

R = 2 ohm.

The current from the battery would be 

I = V/R

V = 2 Volts.

So, I = 2/2 = 1 A

I = 1 A.

The correct answer is option (4).