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Kirchhoff's First Law and Conservation of Charge

At any point in an electric circuit, the sum of currents into that point is equal to the sum of currents out of that point.This is a consequence of the conservation of charge. Charge is a fundamental physical property and one of the few properties that must be conserved.

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Specification: OCR Physics A (H156), AS-level, 4.1.1 Charge and 4.3.1 Series and parallel circuits. Topic: Electricity.

Key terms in this lesson

wavelength: The minimum distance between two points on a wave that are in phase, such as from one peak to the next.
frequency: The number of complete oscillations or wavelengths passing a given point per unit time.

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