Question

What will happen if there is a change in a magnetic field?

Answer 1

based off the above answer i would on plato the option is D because it would collapse.

Answer 2

If the magnetic field will change the electric current will also change.
Because the magnetic field relies on magnetic materials. Any deceleration of these two materials it will cause a huge effect. The earth magnetic field is protecting the atmosphere from the solar wind any sudden changes will cause navigational disaster.