Two bar magnets are placed on a table end to end, and they are allowed to swivel
ID: 2112351 • Letter: T
Question
Two bar magnets are placed on a table end to end, and they are allowed to swivel freely about their centers. Which describes the arrangement they form?
a) They align so that the north pole of one magnet faces the south pole of the other magnet
b) They align so the two south poles face each other
c) They form a T shape, meaning they are oriented perpendicularly to each other
d) They align so the two north poles face each other
A compass needle aligns in a north-south direction because __________.
a) earth's magnetic north pole coincides with its geographic north pole
b) earth's magnetic south pole coincides with its geographic north pole
c) earth's magnetic south pole is reasonably close to its geographic north pole
How is the radius of the circular path of a charged particle in a magnetic field related to the momentum of the particle?
a) It is indirectly related to the momentum.
b) It is directly related to the square of the momentum.
c) It is directly related to the momentum.
d) It is indirectly related to the square of the momentum.
Which condition will cause a charged particle in a uniform magnetic field to move in a helix?
a)The initial velocity of the charged particle is neither perpendicular nor parallel to the magnetic field.
b) The velocity of the charged particle is increasing at a constant rate within the field.
c) The charged particle moves perpendicular to the direction of the magnetic field.
d) The charge on the particle is decreasing as it moves through the field.
Explanation / Answer
a) They align so that the north pole of one magnet faces the south pole of the other magnet
b) earth's magnetic south pole coincides with its geographic north pole
c) It is directly related to the momentum.
a)The initial velocity of the charged particle is neither perpendicular nor parallel to the magnetic field.