0 votes 0 votes A coaxial capacitor of inner radius $1\: mm$ and outer radius $5\: mm$ has a capacitance per unit length of $172\: pF/m.$ If the ratio of outer radius to inner radius is doubled, the capacitance per unit length $\text{(in}\: pF/m)$ is ________. Electronic Devices gate2015-ec-3 numerical-answers electronic-devices + – Milicevic3306 asked Mar 27, 2018 recategorized Nov 15, 2020 by soujanyareddy13 Milicevic3306 16.0k points 66 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.