8 16-3 Loop matrix and KVL Augmented loop matrix +1 when branch b is in loop lk and has the same orientation 1 when branch b; is in loop lk and has the opposite orientation, o when branch b is not in loop lk§16-3 Loop matrix and KVL Augmented loop matrix   Ba = bkj • and has the same orientation; when branch b i s i n loop l j k when branch b i s not i n loop l . j k          − + = 0 1 1 bkj and has the opposite orientation; when branch b i s i n loop l j k