Electron Beam

Question Text

An electron beam with a radius of 0.87 \(\textrm{mm}\) has a measured current of 129\(\rm\ \mu A\). What is the magnitude of the current density in the beam?

Answer Section

Please enter in a numeric value in \( A / m^2 \) .

Attribution

Problem is licensed under the CC-BY-NC-SA 4.0 license.