Introduction to Electrodynamics · Problem 10.31

Potentials and Fields — David J. Griffiths

Physics · fields-of-charge-constant-velocity

Problem

A particle of charge

q

is traveling at constant speed

v

along the

x

axis. Calculate the total power passing through the plane

x = a

, at the moment the particle itself is at the origin.

\left[Answer: q^2v/32\pi\epsilon_0 a^2\right]