🔬 Everyday Science

According to Kirchhoff's Current Law (KCL), what is the sum of currents entering any junction in an electrical circuit?

A Equal to the sum of voltages across the components.
B Always zero.
C Directly proportional to the total resistance.
D Dependent on the power of the source.

✓ Correct Answer: Option B

Kirchhoff's Current Law (KCL) states that the algebraic sum of currents entering a junction (or node) is equal to the algebraic sum of currents leaving that junction, implying that the net sum of currents at any junction is zero. This is a consequence of the conservation of electric charge.

💡 Why is B) the correct answer?

The correct answer to the question "According to Kirchhoff's Current Law (KCL), what is the sum of currents entering any junction in an electrical circuit?" is Option B: Always zero..

The other options — A) Equal to the sum of voltages across the components., C) Directly proportional to the total resistance., D) Dependent on the power of the source. — are incorrect for this Everyday Science question. As explained above: Kirchhoff's Current Law (KCL) states that the algebraic sum of currents entering a junction (or node) is equal to the algebraic sum of currents leaving that junction, implying that the net sum of cur…

📚 About This Everyday Science Practice Question

This 3-level Everyday Science question from the Physics - Heat, Light, Sound topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free Everyday Science practice test or use flashcards for spaced repetition review.

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