A-LevelPhysicsD.C. circuitsMay/June 2019Paper 1 Q361 Mark
Kirchhoff's first law states that the sum of the currents entering a junction in a circuit is equal to the sum of the currents leaving it. The law is based on the conservation of a physical quantity. What is this physical quantity?
Acharge
Benergy
Cmass
Dmomentum
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The correct answer is A. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
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