Motion of a Charged Particle in a Uniform Magnetic Field : Class12 Physics

 PHYSICS

CLASS-12

CBSE/ICSE/IB BOARD/BSEB(BIHAR BOARD)/IIT-JEE/NEET

LECTURE-12

CHAPTER: MAGNETIC EFFECT OF CURRENT

MOTION OF A CHARGED PARTICLE IN A UNIFORM MAGNETIC FIELD :

Motion of a charged particle in a uniform magnetic field

1. Lorentz magnetic force

2.Trajectory of charged particle                                                                                                  3.Three cases arise :

(a)when charged particle is moving along the direction of magnetic field i.e. angle between velocity and magnetic field is zero

(i) Expression for Lorentz force

(ii)Trajectory of particle

  (b)When charged particle is moving perpendicular to the direction of magnetic field 

        i.e. the angle between velocity and magnetic field is 90 degree

         (i) Trajectory of particle

          (ii)Expression for Lorentz force

           (iii)Expression for centripetal force

           (iv)Expression for radius

            (v)Expression for velocity

            (vi)Expression for angular frequency/angular velocity

            (vii)Expression for frequency

            (viii)Expression for time period

            (ix)Expression for kinetic energy

(c)When the angle between velocity of charged particle and magnetic field < 90 degree

   (i) Trajectory of particle

          (ii)Expression for Lorentz force

           (iii)Expression for centripetal force

           (iv)Expression for radius

            (v)Expression for velocity

            (vi)Expression for angular frequency/angular velocity

            (vii)Expression for frequency

            (viii)Expression for time period

            (ix)Expression for kinetic energy

BY SHIVANAND CHOUDHARY
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B.D.GURUKUL
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