In the circuit shown in the figure, the value of the current

In the circuit shown in the figure, the value of the current i will be given by—

The given circuit:

V_a = 5 ×	1	=	5	V
	1 + 1		2

V_b = 4V_ab ×	1	=	V_ab
	1 + 3		4

V_ab = V_a – V_b = 5/2 – V_ab
or
2V_ab = 5/2
or
V_ab = 5/4 V
or
V_ab = 1.25 V
and

i =	4 × V_ab	=	4 × 1.25	= 1.25A
	4		4

Hence alternative (B) is the correct choice.