Physics 9702 · AS & A Level · Kirchhoff's laws

Kirchhoff's laws — practice question

In an electrical circuit, the total current flowing into a junction is always the same as the total current flowing out of it. Why does this happen?

  • AIt is a consequence of the conservation of charge.
  • BIt is a consequence of the conservation of electromotive force.
  • CIt is a consequence of the conservation of energy.
  • DIt is a consequence of the conservation of potential difference.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI