00:01
Hi, here this given problem it includes three different questions.
00:07
In the first one, there are two parallel current carrying conductors.
00:14
Both are carrying current in the same direction as shown here and the current is into the plane of paper as it is being represented by the crosses.
00:24
There is a point between them, midpoint of the distance between the plane of the them distance of this observation point from both of the wires will become 5 centimeter each as the total gap between the wires is given as 10 centimeter both the wires are carrying same current 4 .00 ampere and in the same direction so, using right -hand thumb rule directions of the two magnetic fields means b1 due to the first conductor and b2 due to the second conductor at p are opposite to each other.
02:01
Due to the first conductor, it will be down like this, say it to be b1.
02:07
And due to the second conductor, it will be upward like this.
02:14
This is b2.
02:15
And using the expression for the magnetic field, that is, mu not upon 4 pi into 2 i by r.
02:25
M .ote by 4 pi that is a constant current is same and the distance 5 cm, that is also same.
02:29
So, the directions are opposite and magnitudes are equal.
02:43
So we can say net magnetic field at p is zero.
02:59
So option a is correct here in the first question in this given problem...