What creates the magnetic force in an electromagnet?(1 point) Responses coiled wire coiled wire electric current electric current battery battery iron or steel core
Which statement about electromagnets is correct?(1 point) Responses Two north poles attract each other. Two north poles attract each other. Two south poles attract each other. Two south poles attract each other. A north pole and south pole repel each other. A north pole and south pole repel each other. A north pole and a south pole attract each other.
A north pole and a south pole attract each other.
Which is the best description of how to build an electromagnet?(1 point) Responses Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery. Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery. Attach one end of a wire to a battery, and attach the other end of the wire to an iron or steel core. Attach one end of a wire to a battery, and attach the other end of the wire to an iron or steel core. Wrap a wire around an iron or steel core at least ten times. Wrap a wire around an iron or steel core at least ten times. Connect one end of a battery to an iron or steel core with a wire, then connect the other end of the battery to the core with another wire.
Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery.
What causes a maglev train to hover above the track?(1 point) Responses attractive magnetic force attractive magnetic force electric current electric current repellant magnetic force repellant magnetic force massive batteries
