Step 1:

Find the Norton equivalent current.

1. Short the load. \ \

2. Calculate the Short Circuit Current. This is the Norton Current .

Redraw the circuit :

The netwrok has three loops.

Find the current in each loop.

Apply KVL to the Loop 1:

.

Step 2:

Apply KVL to the Loop 2:

.

Step 3:

Apply KVL to the Loop 3:

.

Substitute in equation .

.

Substitute in equation .

. 

Mangnitude of the nortons current is .

Nortons current is .

Solution:

Nortons current is .