is 1 MeV, the energy acquie u leul (1) 1 MeV (2) 4 Mev (3) 0.5 MeV 12. A wire carrying current / has the shape as shown in adjoining figure. Linear parts of the wire are very long and parallel to X-axis while semicircular portion of radius R is lying in Y-Z plane. Magnetic field at point O is M) B (3) -- (ai -28) (si – 26) (2) 8- Rad +26) (4) 8 - (nå +28) in martin moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced