00:01
This question has four proportions that is all one by one.
00:03
First let's say the given given.
00:08
The value of a is 5 centimeter.
00:11
In meters we get 0 .05 meter.
00:15
The value of b is 20 centimeter.
00:19
In meters we get 0 .20 meter.
00:23
The value of c is 25 centimeter.
00:26
In meters we get 0 .25 meter.
00:30
And also said that the electric field at a point 15 centimeter.
00:33
Away from center the dialective measure this let us represent with e 3 .85 times power 3 newton per column radially inward and also it is given 80 cdeme away from center the electric field observed is 194 newton per column radial outward let us draw a diagram we get in the first question is asking to find the charge on the insulating sphere which is having radius a so for first question charge on insulating sphere we know from boss law is equal to k q divided by r square where q is the charge enclosed in a gaussian surface of radius r which is having electric field e and k is the fulence portion having value of nine times time 4 .9.
01:47
So here at 15 centimeters which is here in this range.
01:51
So in this range that spear is having 15 centimeter diameter radius and have electric field 3 .85.
02:01
So on section of the above values 3 .85 times channel cube k value 9 times over 9...