# Diferenças entre edições de "Debye lenght"

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Consider Debye’s potential created by a punctual test charge $$q_T$$ that is placed inside an homogeneous plasma.

a) Show that the charge in the shielding cloud exactly cancels $$q_T$$. Calculate the total charge inside spheres of radii $$\lambda_D/2 , \; \lambda_d$$ and $$5\lambda_D$$