Can Energy be stored in or removed from a force field?

Answer 1

In nonconservative fields like electric field, energy can be stored and retrieved. In conservative fields like gravitational field, you can't arbitrarily add and retrieve energy. Purely magnetic field is also a conservative field.

Answer 2

I'm afraid force fields such as those in Star Trek do not exist. They are what is known as science fiction.

All potential energy in the universe ultimately relies on acting against one of the fundamental forces of nature. For instance, the potential energy of a mass at a height comes from gravity.

Answer 3

Energy can be stored and retrieved from both electric and magnetic fields. Capacitors store energy in electric fields, inductors in magnetic fields. The (time non-varying) electric field is a conservative field that can be represented by a scalar potential. The magnetic field is non-conservative.

Answer 4

If it could think of what it would mean; You would be able to capture the energy released from a human body at the time of death and be able to keep your dead loved ones here with you indefinitely. Thus eradicating death as we know it.