0:00
Hello everyone.
00:01
Here we have been given three point charges placed on these x -axis so let's take this is our x -axis.
00:08
This is the point of origin so it's zero centimeter.
00:13
First charge is here which is q at 3 cm.
00:18
Second charge again is q which is at 8 cm and third charge is again q which is at 11 cm and the charge is again q which is at 11 cm and the charge again charge here we have been given 1 into 10 to the power minus 4 column so this is our charge so first of all with this charge we have to find out our electric field at 5 centimeter so we can take our distance is 5 centimeter and we have to find out the electric field due to this charge q so e equals to we can say that it's k q by r square because we have to find out only alone by this charge.
01:02
So it's nine times 10 to the power nine.
01:06
Then the charge is 10 to minus four quorum.
01:10
Then the distance will be only two centimeters.
01:12
So it's four times 10 to the power minus four.
01:17
So this 10 to minus four ten to minus four canceled.
01:20
So this one is 2 .25 times 10 to nine newton upon cooler.
01:30
Okay, then we also have to find out that between this 11 cm where the electric field is going to be zero.
01:39
So it can be zero somewhere between here...