00:01
Okay, so we know energy density ue is equal to 1 .5 -1 -1 times e -square.
00:07
Epsilon 0 here is the permutivity of a free space, e -c -electric field.
00:11
And we know, the electrow -e can be equal to v -r, which is potential divided by the radius of the sphere.
00:19
So therefore, if we use v -o -r substitute for e, so therefore, eventually we have energy density, ue is equal to 1 -5 -e2, equal to 1 -5 -1 -1 -2 to a power 2.
00:29
So we know epsilon 0 is equal to 8 .85, times 10 to 0 .2 kodon square per newton times of meter square.
00:34
And when the potential is given as 1 ,000 volts.
00:37
And the radius of the severe should be equal to the diameter of the severers divided by 2...