--- title: Cylindrical Capacitor topic: Circuits author: Ava Cornell source: 2.8.29 template_version: 1.3 attribution: openstax-physics-vol2 partialCredit: true singleVariant: false showCorrectAnswer: false outcomes: - 21.7.1.0 difficulty: - undefined randomization: - undefined taxonomy: - undefined span: - undefined length: - undefined tags: - OSUP - volume 2 - chapter 8 - problem 29 - capacitors - numeric - AC assets: null part1: type: number-input pl-customizations: rtol: 0.05 weight: 1 allow-blank: false show-correct-answer: false label: $R_2/R_1= $ myst: substitutions: params_vars_title: Cylindrical Capacitor params_c: '15' --- # {{ params_vars_title }} ## Question Text If the capacitance per unit length of a cylindrical capacitor is {{params_c }}$\textrm{ pF/m}$, what is the ratio of the radii of the two cylinders, $R_2/R_1$? In this set-up, $R_2$ is the outer cylinder and $R_1$ is the inner cylinder. ### Answer Section ### pl-submission-panel
{{ submitted_answers.part1_ans_str }} {{ feedback.part1_ans }} ### pl-answer-panel $R_2/R_1 =$ {{ correct_answers.part1_ans_str }} ## Attribution Problem is from the [OpenStax University Physics Volume 2](https://openstax.org/details/books/university-physics-volume-2) textbook, licensed under the [CC-BY 4.0 license](https://creativecommons.org/licenses/by/4.0/).