Kirchhoff's **junction (current) law** states that, at any junction in an electrical network:
AThe total potential drop equals the EMF
BThe sum of resistances is constant
CThe algebraic sum of currents meeting at the junction is zero
DThe current through every conductor is equal
Answer & Solution
Correct answer: C. The algebraic sum of currents meeting at the junction is zero
Kirchhoff's first law: $\sum I_i = 0$ at every junction. Currents arriving are taken positive, those leaving negative. It expresses **conservation of charge** — what comes in must go out.
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