What is the dielectric breakdown voltage of a vacuum?

Question

What is the dielectric breakdown voltage of a vacuum?

Answer 1

The dielectric strength of an insulating material can be defined as the maximum ... The breakdown voltage at higher pressures in gases shows an increasing ... Ideally, vacuum is the best insulator with field strengths up to 107 V/cm, ...

Answer 2

I think you will find in a pure vacuum there is no such thing.

A breakdown voltage is the voltage you need for electricity to charge the particles of something and then flow across it.



Sparks are also impossible in a pure vacuum, because these are hot/charged air particles, being pushed to a higher energy level and releasing light.

Answer 3

30 kV/cm. Peak to peak if it is AC.

Answer 4

a) k = C/C. = 3.4/4.9*10^-12 = 7 * 10^11