00:01
Hello, in the question we have given the electric field between the plates of a parallel plate capacitor has magnitude e.
00:08
The potential across the plates is maintained with a constant voltage.
00:12
So we have this parallel plate and this parallel plate is connected to a constant voltage source that is a battery as mentioned in the question.
00:24
So initially the distance is, so initially the separation is, initially the separation is d, then finally the separation is 2d.
00:52
So see what they are saying, they are pulled apart to twice their original separation which is small compared to the dimension of the plates.
01:06
The magnitude of the electric field between the plates is 2d.
01:10
So initially, so let's say initially the electric field, the electric field is e.
01:25
So now we know that electric field is given by v by d.
01:30
So this is the initial electric field.
01:34
So now the separation, so now d prime is equal to 2d, means twice the distance.
01:42
So e is equal to v by d prime.
01:45
So that is nothing but v by 2d...