A diagram illustrates electromagnetic induction, showing a coil connected to a battery, a light bulb, and a circuit with a grid of switches labeled P1, P2, and P3, where a red wave symbol appears on the right side of the circuit. The scene then cuts to a real-world construction site where two workers in hard hats are handling a large, bent metal pipe, with one worker bending over the pipe while the other stands nearby observing.

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