Question: Figure 23-29 shows a vertical iron rod with a wire coil of many turns wrapped around its base. A metal ring slides over the rod

Figure 23-29 shows a vertical iron rod with a wire coil of many turns wrapped around its base. A metal ring slides over the rod and rests on the wire coil. Initially the switch connecting the coil to a battery is open, but when it is closed, the ring flies into the air. Explain why this happens.
Figure 23-29

Iron rod- Metal ring- Wire coil-

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