Consider a circuit. there are three resistors, r1, r2, and r; and two emf’s, e1 and e2. the directions of the currents are indicated. applying kirchhoff’s rules, what equations
does the loop badcb yield?
1.e1−e2−i1r2−i2r1=0
2. e1 − e2 − i2 r2 − i1 r1 = 0
3. e1 + e2 + i2 r2 − i1 r1 = 0
4.e1−e2−i1r2+i2r1=0
5. e1 + e2 + i2 r2 + i1 r1 = 0
6. e1 + e2 − i2 r2 + i1 r1 = 0
7. e1 − e2 + i2 r2 + i1 r1 = 0
8.e1+e2−i2r2−i1r1=0
9.e1−e2−i2r2+i1r1=0
10.e1−e2+i2r2−i1r1=0