๐Ÿ’กap physics c: e&m review

Rho (ฯ)

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

Rho (ฯ) is often used in physics to represent density. In electromagnetism, it specifically refers to volume charge density, which describes how much electric charge exists per unit volume in space.

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Rho (ฯ) Definition - AP Physics C: E&M Key Term | Fiveable