Question

a proton is an uniform magnetic field B at an angle of 90° with the direction of field then path of particle will beparabolic, spiral,circle,linear​

Answer 1

Answer:

Circular Path

Explanation:

Under uniform magnetic field, force evB acts on proton and provides the necessary centripetal force mv² / a  = eVB

J = a²eB

As the charged particle enters perpendicular to the magnetic field, the force will act perpendicular to the velocity. Thus the particle starts moving in the circular path. As force and displacement are perpendiculars the work done will be zero and kinetic energy will not change. But as it moves in circular path direction of momentum will change but the magnitude is unchanged.

When a charged particle enters a uniform magnetic field at right angle to the direction of field, it will move along circular path.