In the shown circuit, potential difference between points A and B is 16 V. The current passing through 2W resistor will be :
2.5 A
3.5 A
4 A
zero
VA−4i−9−(i−i1)+3−4i=VB
10=9i−i1 & 3i1−i=9
By solving these equation i1=3.5 Amp