Which of the statements below is NEVER true? (a) If a negative charge is shot in
ID: 1446582 • Letter: W
Question
Which of the statements below is NEVER true?
(a) If a negative charge is shot into a uniform electric field is will move what a constant non-zero acceleration through the field.
(b) If the electric field at a point is zero, then the electric potential at the point is also zero.
(c) If a negatively charged particle is placed at rest near the South pole of a permanent magnet it will be attracted to the magnet.
(d) If a charged particle is moving perpendicular to a uniform magnetic field it is moving with a constant magnitude acceleration.
(e) If the net force on a charge moving in a uniform magnetic field is non-zero the charge's kinetic energy is constantly changing.
Explanation / Answer
(a) If a negative charge is shot into a uniform electric field is will move what a constant non-zero acceleration through the field.
this can be true , if theta = 0 degree
(b) If the electric field at a point is zero, then the electric potential at the point is also zero.
this can be true.
(c) If a negatively charged particle is placed at rest near the South pole of a permanent magnet it will be attracted to the magnet.
this can be true
as the magnetic force is zero when the charge is at rest
(d) If a charged particle is moving perpendicular to a uniform magnetic field it is moving with a constant magnitude acceleration.
this is true
(e) If the net force on a charge moving in a uniform magnetic field is non-zero the charge's kinetic energy is constantly changing.
as the magnetic force is always perpendicular to motion of the charge.
the kientic energy will be constant