For the given circuit; answer the followings: 3A 12 va 20 Vd + V 2012 + + 15 V 10 22 >2V 1 G 1 19 the voltage Vb is : * (2 Points) 10 (13 - 11 ) 20 (12 - 11 ) O-Va - Vx O Va + Vx 21 the power generated by the current source 3A is : (note you can choose more than one correct answer) * (2 Points) 20 x 122 12 x Va 3 (Vc - Va) 12 x Vc O 3(Va - Vc) none O 12 x (Vc - Va) 20 the voltage Vx is : * (2 Points) 20 (12 - 13 ) O 15 - Vb Va-Vb 20 0 -15 - Vb Vb - Vc none Vb - Va 21 the power generated by the current