Based on Kirchhoff’s junction and loop rules as well as the directions of the currents as assigned, which of the following statements is incorrect?


In loop adcba,
I
2
R
2
+
I
3
R
3
=
12


At junction point a,
I
1
+
I
2
=
I
3


At junction point d,
I
1
+
I
2
+
I
3
=
0


In loop abcdefa,
I
2
R
2
=
I
1
R
1
+
6