BITS PILANI, K.K. BIRLA GOA CAMPUS ELECTRICAL SCIENCES (EEE F111) Tutorial -2 on 28-01-2015 1) Find value of current ‘i1’ in the following circuit using superposition theorem. ANS: With only 30V voltage source active Using mesh analysis: Apply KVL to each mesh, -30+6I1+VX=0 & -Vx+4 I2+2 I2=0 Vx=30-6I1 & Vx= 6I2 Since LHS are equal,RHS of two mesh equations are equal 30-6I 1 =6I 2 .-----------equ n 1 Also, I 1 -I 2 =8i 11 & I 2 =i 11 -----Substituting in above equ n -1