here,
for the loop abcdefghija
using Kirchoff's loop rule
E1 - E4 + E3 = r1 * I1 + R5 * I1 + r4 * I3 + r3 *I3 + R3 * I3 + R1 * I1
0 = - E1 + E4 - E3 r1 * I1 + R5 * I1 + r4 * I3 + r3 *I3 + R3 * I3 + R1 * I1
so, the correct option is b) ( - I1 * R1 + E1 - I1 * r1 - I1 * R5 - I3 * r4 - E4 - I3 * r3 + E3 - I3 * R3 = 0)
Apply the loop rule to loop abcdefghija in the figure below. E, = 24.0 v Vid...