All questions below are in multiple choice type format. Clearly CIRCLE the lette
ID: 1442048 • Letter: A
Question
All questions below are in multiple choice type format. Clearly CIRCLE the letter corresponding to your answer choice. There is no need to show any work for these questions. Each correct response is worth ONE point. (Magnetism questions will be covered in class by March 22) The figure shows motion of a charge particle in a constant magnetic field In which diagram the particle experiences the smallest magnitude of the magnetic force? (a) (b) (c) Both (a) and (c) None of these A proton moving westward with a velocity of 5 0 times 10^3 m/s enters a magnetic field of 0 20 T pointing southward What is the magnitude and direction of the force that acts on the proton An electron, moving north, enters a magnetic field of cert am strength Because of this field the electron curves upward What is the direction of the magnetic field downward upward towards the east towards the north towards the west A charged particle is moving horizontally eastward with a velocity of 3 times 10^6 m/s m a region where there is a magnetic field of magnitude 5 times 10^-5 T directed westward The particle experiences a force of 15 times 10^-16 N northward What is the charge on the particleExplanation / Answer
1.as the magnetic force is given as
F = B *v * q * sin(theta)
theta is the angle between magnetic field and velocity
for the smallest force sin(theta) should be smallest
hence ,the correct option is D) both a and c
2)
as F = q * V X B
F = 1.602 *10^-19 * (-5 *10^3 i ) X (- 0.20 j)
F = 1.6 *10^-16 k = 1.6 *10^-16 N upwards
the correct option is E)1.6 *10^-16 N upwards
3)
force = upwards
velocity= north
F = q * V X B
the direction of field is EAST
the field is C) toward the East
4)
as F = q * V X B
15 *10^-16 = q * (3 *10^6 i ) X (5 *10^-5 (-i))
as i X i = 0
this situation is not possible
the correct option is E)