Consider the circuit shown below. There are three resistors, 1, 72, and R; and two emf's, & and &2. The directions of the cur- rents are indicated. T1 B WW A F R. E E2 C T2 D 12 Applying Kirchhoff's rules, what equation does the loop BADCB yield? 1. El - 82 - 11 72 + 1271 = 0 2. El + E2 + 1212 - i1 1 = 0 3. El - 82 - 1272 + ilm = 4. El - 82 + 12re + im = 0 5. El - E2 + 1212 -if] = 0 6. El+ 2 - 1212 + 171 = 0 7. El+ Ez + izz + ir = 0 8. El - 2 - i1 12 - 12 71 = 0 9. El - 82 - 1212 - im = 10. El + 82 - 1272 - 61 71 = 0