When a charged particle enters in a uniform magnetic field, its kinetic energy _____?

When a charged particle enters in a uniform magnetic field, its kinetic energy _____?

جب کوئی چارج شدہ ذرہ یکساں مقناطیسی فیلڈ میں داخل ہوتا ہے تو ، اس کی متحرک توانائی _____؟
Explanation

A magnetic field exerts a force perpendicular to the motion of the charged particle, changing its direction but not its speed.

Since no work is done by the magnetic field, the kinetic energy stays constant.