Why is a magnetic field a vector quantity?
directional force
directional speed
specified location
It produces long field lines.
It produces field lines that are close together.

Question

Why is a magnetic field a vector quantity?
directional force
directional speed
specified location
It produces long field lines.
It produces field lines that are close together.

amonoconnor · Answer

The last choice there just doesn't make sense... The "closeness" of field lines wouldn't make something a vector. The second-to-last choice would make it a vector either. Location? Umm... No, that shouldn't matter either. "Speed" is a scalar, because it's just a magnitude, with no directional specification, so if your paper says the word "speed" you can count that out. Now... A force, forever and always, is a vector, and can always be counted as such, so if you calculate something with a force, the outcome will have that force's direction, usually, and therefore is a vector. The answer is the first choice. :)

anonymous · Answer

I thought it was that one but i wasnt the second option threw me off for some reason, thanks again!

amonoconnor · Answer

You bet! :)