Question

What is it called when groups of atoms align their magnetic poles?

Answer 1

Magnetic Domain

Answer 2

If there is no electric current flowing through a wire, what happens to the magnetic field?

Answer 3

and What can be increased in order to increase the magnetic field?

Answer 4

for the 3rd question this video should help
https://www.khanacademy.org/science/discoveries-projects/discoveries/magnetic-fields/v/increase-strength-of-magnet

Answer 5

If the primary coil of a transformer has more loops than the secondary coil, then the voltage is stepped down; if the secondary coil has more loops the voltage is stepped up. is this true?

Answer 6

Yes this is true.