The potential distribution in a simplified model of a vacuum diode consisting of cathode in the plane x = 0 and anode in the plane x = d and held at a potential V0 relative to the cathode is given by
![2065_4255a210-94ee-46ea-8282-707e261a678e.png](https://secure.tutorsglobe.com/CMSImages/2065_4255a210-94ee-46ea-8282-707e261a678e.png)
(a) Find the space charge density distribution in the region 0
(b) Find the surface charge densities on the cathode and the anode.