# Problem: An infinite insulating cylinder of radius R has a uniform charge density ρ (units: C/m3). What is the magnitude of the electric field at point A, which is r = R/3 from the central axis of the cylinder? A. ρR / 6ϵ0 B. ρR / 2ϵ0 C. ρR / 4ϵ0 D. 2ρR / 3ϵ0

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###### Problem Details

An infinite insulating cylinder of radius R has a uniform charge density ρ (units: C/m3). What is the magnitude of the electric field at point A, which is r = R/3 from the central axis of the cylinder?

A. ρR / 6ϵ0

B. ρR / 2ϵ0

C. ρR / 4ϵ0

D. 2ρR / 3ϵ0 Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Gauss' Law with Calculus concept. You can view video lessons to learn Gauss' Law with Calculus. Or if you need more Gauss' Law with Calculus practice, you can also practice Gauss' Law with Calculus practice problems.

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