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Physics (AS & A Level) · May / June 2025 · Paper 14 · Question 34

9702Kirchhoff’s laws

The sum of the electrical currents into a point in a circuit is equal to the sum of the currents out of the point. Which statement is correct?

  1. AThis is Kirchhoff's first law, which results from the conservation of charge.
  2. BThis is Kirchhoff's first law, which results from the conservation of energy.
  3. CThis is Kirchhoff's second law, which results from the conservation of charge.
  4. DThis is Kirchhoff's second law, which results from the conservation of energy.

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Correct answer: A. This is Kirchhoff's first law, which results from the conservation of charge.

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