a) For a parallel plate capacitor the distance between plates is 10 cm, surface area is 0.2 m? and dielectric constant is , = 2(1 + 100a?). Find the capacitance. b) Inner radius of a coaxial cable is 2m and 5m and outer radius is 3m and 6m. Net charge in conductors are 10 C/m and 6 C/m respectively. Find the surface charge densities for four(inside and outside of inner and outer conductor)surfaces