Question

When is a magnetic field generated?
whenever a current is passing through a wire
whenever a wire is in contact with a permanent magnet
at the instant when the current through a wire stops
at the instant when the current changes direction

Answer 1

@sissyedgar

Answer 2

umm which one do you think it is

Answer 3

i think A

Answer 4

Yep that's right

Answer 5

I AGREE WIT A!

Answer 6

What holds a moon in its orbit?
its own internal magnetism

the gravitational pull of the planet it orbits

the gravitational pull of the star it orbits

the heat generated by the planet it orbits

Answer 7

B!

Answer 8

https://www.google.com/?gws_rd=ssl#q=WHAT+HOLDS+A+MOON+in+its+orbit