Question

Two thin long wires carry current I1 and I2 along x- and y-axes, respectively, as shown in fig. Consider the points only in x-y plane.

(A) Magnetic field zero at least at one point in each quadrant

(B) Magnetic field can be zero somewhere in the first quadrant

(C) Magnetic field can be zero somewhere in the second quadrant

(D) Magnetic field is non-zero in second quadrant

Answer 1

Correct option (B, D)

Explanation:

In first and third quadrants direction of magnetic field is opposite due to the two wires. So, magnetic field can be zero only in first and third quadrants not in second and fourth.