A particle of mass and charge

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism

Problem

A particle of mass

1\times10^{-26}\,\mathrm{kg}

and charge

+1.6\times10^{-19}\,\mathrm{C}

, travelling with a velocity of

1.28\times10^6\,\mathrm{m\,s^{-1}}

along the positive

x

-axis, enters a region in which a uniform electric field

\mathbf{E}

and a uniform magnetic field

\mathbf{B}

are present such that

E_z=-102.4\,\mathrm{kV\,m^{-1}}

and

B_y=8\times10^{-2}\,\mathrm{Wb\,m^{-2}}

. The particle enters this region at the origin at time

t=0

. Then, (a) Net force acts on the particle along the positive

z

-direction. (b) Net force acts on the particle along the negative

z

-direction. (c) Net force acting on the particle is zero. (d) Net force acts in the

xz

-plane.