Physics for IGCSE & O level - Magnets And Currents (Section 3 - No. 32)
What happens to a length of copper wire that has been placed in a magnetic field?
It will experience no force.
It will experience a force if a current is passed through it.
It will become magnetized.
The field will become stronger.
설명
If a current is passed through the wire while inside the field, it experiences a force