Answer to Question #99501 in Electric Circuits for Aled

Question

4 conductors meet at a node:


Given that I1 = -6 A I2 = 8 A and I3 = 7 A, use Kirchoff's current law to calculate the current I4. Give your answer in Amps.

Answer 1

Applying the kirchoff law at the node

I₁ + I₂ + I₃ + I₄ = 0

$\implies$ - 6 + 8 + 7 + I₄= 0

⟹ I₄ = - 9 Amp