Final answer:
Electromagnets have diverse applications in powering motors, MRI machines, and transmitting electrical signals across barriers.
Explanation:
Electromagnets are used in various situations ranging from powering electric motors in household appliances to applications like magnetic containment of fusion for energy production. They are also crucial components in technologies such as MRI machines in medicine and transcranial magnetic stimulation for neurological research. Additionally, electromagnetic induction is employed in transmitting electrical signals, like in cochlear implants, across barriers.
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