Chapter 4, Problem 4.29P

A 1.0-m-long coaxial cable of inner conductor diameter 2.0 mm and outer conductor diameter 6.0 mm is filled with an ideal dielectric with ${\text{ε}}_{\text{r}}=10.2$. A voltage $v\left(t\right)=10.\cos \left(6\pi \times {10}^{6}t\right)\text{mV}$ is placed on the inner conductor and the outer conductor is grounded. Neglecting fringing fields at the ends of the coaxial cable, find the displacement current between the inner and outer conductors.