Electricity and Magnetism · Problem 10.23

MAGNETIC FIELDS IN MATTER — Edward Purcell & David Morin

Physics — E&M · dipole-plus-uniform-field-zeros

Problem

A dipole of strength

p = 6 \cdot 10^{-10}

C-m is located at the origin, pointing in the

\hat{z}

direction. To its field is added a uniform electric field of strength 150 kV/m in the

\hat{y}

direction. At how many places, located where, is the total field zero?