A charged particle moves through a magnetic field perpendicular to its direction. Then
A. kinetic energy changes but the momentum is constant
B. the momentum changes but the kinetic energy is constant
C. both momentum and kinetic energy of the particle are not constant
D. both momentum and kinetic energy of the particle are constant
Answer:B
A charged particle moves through a magnetic field perpendicular to its direction. Then
A. kinetic energy changes but the momentum is constant B. the momentum changes but the kinetic energy is constant C. both momentum and kinetic energy of the particle are not constant D. both momentum and kinetic energy of the particle are constant