2. [25 points ] For the circuit shown: [a] Current I, flows through 81 = 10 V and $2 = 20 V. Current 12 flows through 83 = 30 V, and current Is flows through 84 = 100 V. R1 = 10 2, R2 = 20 02, R3 = 30 $2, R4 = 40 2 and Rs = 50 0. Express I, in terms of 12, and 13 using Kirchhoff's Junction Rule. E 1 R, S SF RS [b] write down Kirchhoff's loop rule for the left side loop. Hi and Ba and the [c] write down Kirchhoff's loop rule for the right side loop. to the two wire arte on the slot