Contents

Electromagnetic Theory
Vector Analysis
Electrostatics
Magnetostatics
Maxwell Equations
Wave Propagation
Transmission Lines
Antennas
Other Topics
Other Subjects
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5 of 13 articles

Poynting Vector and Power Flow

S = E cross H, average power, Poynting theorem.

Darshan N
Updated: 19 March 2026
5 min read

Poynting Vector Analysis

Calculate power density in electromagnetic waves.

Question 1 of 3

Q1.The Poynting vector (S) mathematically represents which physical quantity?