a) It is possible to induce a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop.b) It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery.d) It is possible to induce a current in a closed loop of wire by change the orientation of a magnetic field enclosed by the wire.e) It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire.