In a region there exists a magnetic field `B_(0)` along positive x-axis. A metallic wire of length 2a, one side along x-axis and one side parallel of y-axis is rotates about y-axis with a angular velocity. Then at the instant shown

An electron is projected along positive z-axis, magnetic field is present along y-axis then direction of initial acceleration of the particle is

A positively charged particle, having charge q, is accelerated by a potential difference V. This particle moving along the x-axis enters a region where an electric field E exists. The direction of the electric field is along positive y-axis. The electric field exists in the region bounded by the lines x=0 and x=a. Beyond the line x=a (i.e., in the region xgta ), there exists a magnetic field of strength B, directed along the positive y-axis. Find a. at which point does the particle meet the line x=a . b. the pitch of the helix formed after the particle enters the region xgea. (Mass of the particle is m.)

A magnetic field is produce and directed along y- axis. A magnet is placed along y- axis. The direction of torque on the magnet is

A metal sample carrying a current along x axis with density is subjected to a magnetic field B_(z) (along z - axis). The electric field E_(y) developed along Y-axis is directly proportional to J_(x) as well as B_(z). The constant of proportionality has SI unit.