Question Detail

PHY 102 Test Compilation PHY 102 1 Objective Question

Question

Answer saved Four wires meet at a junction. The first carries 4 A into the junction, the second carries 5 A out of the junction, and the third carries 2 A out of the junction. The fourth carries:
Options
A 3 A into the junction
Correct Answer
B 7 A out of the junction
C 7 A into the junction
D 3 A out of the junction
Correct Answer

Option A is the correct answer.

Detailed Explanation

KCL: sum in = sum out. In = 4 + I₄. Out = 5+2=7. So 4+I₄=7 → I₄=3 A into junction.

Hint

ΣI_in = ΣI_out.

Question Info