Ask your own question, for FREE!
Physics 14 Online
OpenStudy (anonymous):

Why is there a magnetic field even when there is no current?

OpenStudy (vincent-lyon.fr):

How, where, when? Can you describe the situation you are talking about?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!