For the circuit shown in Fig 1 find The equivalent resistanc

For the circuit shown in Fig 1, find The equivalent resistance seen by the source. The current i. The power delivered by the source. The voltages v_1, v_2. The minimum power rating required for R_1.

Solution

Req= 4+6+2=12ohms

i= V/Req = 6/12 = 0.5A

power deliverd by source= V*i = 3watts

V1= 0.5*6 =3Volts

V2= -4*0.5 = -2Volts

power deliverd to R1= V2^2/R1 =4/4= 1 watt