Question

find the net R and I​

Answer 1

Answer:

Net resistance = 40 Ohm

Total current = 0.3 A

Explanation:

Net resistance of loop 1, consider it as R1 :

R1 = 15 + 15 = 30 Ohm

This 30 Ohm is parallel to the 20 Ohm resistor :

1 /R2 = 1/20 + 1/30

        = 50/600

R2 = 12 Ohm

Net resistance of loop 2, consider it as R :

R = 20 + 12 + 8 = 40 Ohm (Net resistance)

Total current in the circuit :

I = V /R

 = 12 /40

 = 0.3 A