๐Ÿ’กap physics c: e&m review

Conservation of electric charge

Written by the Fiveable Content Team โ€ข Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated August 2025

Definition

A fundamental principle stating that the total electric charge in an isolated system remains constant over time. Kirchhoff's junction rule is a direct consequence of this principle applied to circuit junctions.

AP course connection

Topic 11.7: 11.7 Kirchhoff's Junction Rule

Unit 11

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