system
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human
[MCU] In Iron Man 1, does the second arc reactor house an electromagnet inside itself?

Watching Iron Man 1, and noticed during the scene where Pepper helps Tony replace the arc reactor, that she pulls out the entire electromagnet as he’s warning her not to. Tony then tells her not to put it back in, and has her throw the second reactor in without replacing it.

Maybe I’m missing something, but it is my understanding that the electromagnet is the only thing keeping the shrapnel from reaching his heart, and the arc reactor acts solely as a power source. If this is the case, how does Tony not suffer from cardiac arrest (as he mentioned he was when the magnet was removed) and die after the second reactor is inserted? Is the electromagnet housed in the reactor itself from the second version on?
gpt
I think based on context, the magnet he had first was literally a rare Earth magnet, with a copper wire wrapped around it, boosted by the arc reactor, whereas the replacement was an electromagnet he built and powered, if that makes sense.