Choose the best description of a magnetic field line.
o
a. a magnetic field line shows the direction a positive charge would
move.
o
b. magnetic field lines for a bar magnet are parallel to the magnet.
o
c. magnetic field lines always point north.
o
d. a magnetic field line shows the direction a compass needle would
point.
submit

D

Explanation:

If someone has to find the direction of the magnetic field lines, they would have to keep a compass near it, then it's north pole would show the direction.

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the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force