Final answer:
Electric generators and electric transformers rely on electromagnetic induction to generate or transform electric current.
Step-by-step explanation:
Electric generators and electric transformers depend on electromagnetic induction. This is a phenomenon in which a changing magnetic field induces an electric current to flow in a conductor. In an electric generator, a coil of wire rotates in a magnetic field, creating a changing magnetic field that induces an electric current. In an electric transformer, a changing current in one coil of wire produces a changing magnetic field, which induces a current in another coil of wire.
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