Question

For the network junction shown below, find out the current I₃, given that I₁ = 3 A, I₂ = 4 A and I₄ = 2 A.

Answer 1

According to KCL, incoming currents= outgoing currents

I₁ + I₃ = I₂ + I₄

Or, I₃ = -I₁ + I₂ + I₄ = -3 + 4 + 2 = 3 A.