A lamp needs a complete circuit - Online practice 3

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Paper circuit description: one wire joins the cell to lamp contact 1; the wire from lamp contact 2 is not connected back to the cell. Assume one suitable low-voltage cell and a working matched lamp. This is a reasoning model, not wiring instructions to try alone. Adults control approved holders and components. Never use mains, loose button cells, damaged batteries or direct wire-to-wire short circuits; disconnect if anything warms.