Question
Question: Two long wires carrying current are kept crossed (not joined at O). The locus where magnetic field i...
Two long wires carrying current are kept crossed (not joined at O). The locus where magnetic field is zero is–
A
I1 =
I2
B
I1 =
I2
C
I1 = I2
D
I1 = – I2
Answer
I1 =I2
Explanation
Solution
Magnetic field could be zero in 1st or 3rd quadrant. 
=
or I1 =
I2
