00:04
So, the electric flux is equal to q by epsilon not.
00:12
So, this is also equal to e into a, e is the electric field and a is the area.
00:18
So we can write, these are the two equations, we can equate them and we can write q by epsilon not equals e into a.
00:26
So q is equal to ea into epsilon not.
00:32
Now we have been given that a is equal to 4 pi r square since it is a sphere.
00:37
So e, e, e, e, e, e, 0, 4 pi r square.
00:43
So this will be equal to 8 .85 into 10 to the power minus 12 into minus 150 into 4 pi into 4, 6 .37, 6 .371 into 10 to the power 6 squared.
01:01
So this is equal to minus 6 .8 into 10 to the power 5 coulums.
01:07
So this is a charge on the surface of the earth...