Q2 A thin wire carrying current i is placed along positive z-axis in which current is flowing along positive - Physics - Moving Charges and Magnetism

Question

Q2 A thin wire carrying current i is placed along positive z-axis
in which current is flowing along positive z-axis The unit vector
of magnetic field at a point (a, a, 0) is
(1) - 2   i ^   +   2   j ^ (2) - i ^   -
  j ^
(3) - 1 2   i ^   +   1 2   j ^ (4) - 1 2
  i ^   -   1 2   j ^

Shobhit Mittal · Accepted Answer

Dear student,the magnetic field must be perpendicular to the i^+j^the veactor that is perpendicular to the above veactor is - i^+j^the unit vector is - i^+j^2option 3Regards

Q2. A thin wire carrying current i is placed along positive z-axis in which current is flowing along positive z-axis. The unit vector of magnetic field at a point (a, a, 0) is (1) - 2 i ^ + 2 j ^ (2) - i ^ - j ^ (3) - 1 2 i ^ + 1 2 j ^ (4) - 1 2 i ^ - 1 2 j ^