AP Physics C E&M Practice Questions - AP Physics C Electricity And Magnetism Exam

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An infinite line of charge has uniform linear charge density lambda. Using Gauss's law with a cylindrical surface, the electric field at distance r from the line is:

lambda / (2 pi epsilon0 r) lambda / (4 pi epsilon0 r^2) lambda r / (2 epsilon0) lambda / (epsilon0 r^2)

Correct Answer:

lambda / (2 pi epsilon0 r)

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