Question

Which is NOT a characteristic of a magnetic field produced by a current?
a.
It can be turned on and off.
b.
Its direction can be reversed.
c.
Its strength can be changed.
d.
Its speed can be slowed.

Answer 1

i think it may be a.... im not sure but i think that is the answer. :)

Answer 2

okay thank you(:

Answer 3

anytime. :)