{"id": "card_works_ohms_law", "kind": "verified", "title": "A 12-volt circuit: the current it draws, the power it burns", "body": "Ohm's law ties voltage, current and resistance; the power law says how much heat that makes. 12 V across 6 Ω draws 2 A and dissipates 24 W — the power line standing on Ohm's.  Worked & sealed by the engine — V = I·R → 12 = 2·6 · P = V·I = 12·2 = 24 W.  [HOLDS; open the seal to re-check.]", "source": {"label": "The Works — worked & sealed", "url": "https://narrowhighway.com/s/3d49cceeb5c09d75b5e2718055a0ac05168f2c6013aa31503ffed56e806f0baf", "domain": "electrical", "authority_tier": "verified"}, "shelf": "the-works", "box": "engineering", "bands": ["the-works", "engineering", "electrical", "electrical", "engineering"], "connections": [{"to_card_id": "card_spine_the-works", "relationship": "member_of", "evidence": "a member of the the-works shelf in the keeping"}, {"to_card_id": "card_k_floor_of_discovery", "relationship": "paves", "evidence": "A worked, engine-sealed demonstration — a paving-stone of the floor of reality."}, {"to_card_id": "card_v_0a93eeb3276e", "relationship": "demonstrates", "evidence": "A worked demonstration in the same field (electrical)."}, {"to_card_id": "card_works_far", "relationship": "adjacent", "evidence": "Neighbouring worked demonstrations in the same part of the volume."}, {"to_card_id": "card_works_hash", "relationship": "adjacent", "evidence": "Neighbouring worked demonstrations in the same part of the volume."}, {"to_card_id": "card_works_battery", "relationship": "adjacent", "evidence": "Neighbouring worked demonstrations in the same part of the volume."}, {"to_card_id": "card_works_luhn", "relationship": "adjacent", "evidence": "Neighbouring worked demonstrations in the same part of the volume."}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "subject": "Electrical engineering", "extra": {"seal_hash": "3d49cceeb5c09d75b5e2718055a0ac05168f2c6013aa31503ffed56e806f0baf", "cite_url": "https://narrowhighway.com/s/3d49cceeb5c09d75b5e2718055a0ac05168f2c6013aa31503ffed56e806f0baf", "demonstration_id": "works_ohms_law", "verdict": "HOLDS"}, "presentation": {"glyph": "•", "kind_label": "engineering", "by": "The Works — worked & sealed", "authority": "verified", "posted": "", "standing": "", "link": {"url": "https://narrowhighway.com/s/3d49cceeb5c09d75b5e2718055a0ac05168f2c6013aa31503ffed56e806f0baf", "host": "narrowhighway.com", "provider": "", "titled": "A 12-volt circuit: the current it draws, the power it burns", "waybill_line": "", "reach": "", "embed": ""}}, "neighbors": [{"id": "card_spine_the-works", "title": "The Works — sealed, worked demonstrations", "relationship": "on the shelf of", "why": "a member of the the-works shelf in the keeping", "href": "/card/card_spine_the-works", "resolved": true}, {"id": "card_k_floor_of_discovery", "title": "The Floor of Discovery — one floor, and by its design the fear of God", "relationship": "paves", "why": "A worked, engine-sealed demonstration — a paving-stone of the floor of reality.", "href": "/card/card_k_floor_of_discovery", "resolved": true}, {"id": "card_v_0a93eeb3276e", "title": "V = I·R → 12 = 2·6 (2 A through 6 Ω) · P = V·I = 12·2 = 24 W", "relationship": "demonstrates", "why": "A worked demonstration in the same field (electrical).", "href": "/card/card_v_0a93eeb3276e", "resolved": true}, {"id": "card_works_far", "title": "Floor-area ratio: how much building on a lot", "relationship": "adjacent", "why": "Neighbouring worked demonstrations in the same part of the volume.", "href": "/card/card_works_far", "resolved": true}, {"id": "card_works_hash", "title": "Cryptographic strength: a fingerprint and a cipher", "relationship": "adjacent", "why": "Neighbouring worked demonstrations in the same part of the volume.", "href": "/card/card_works_hash", "resolved": true}, {"id": "card_works_battery", "title": "How long a battery runs a load", "relationship": "adjacent", "why": "Neighbouring worked demonstrations in the same part of the volume.", "href": "/card/card_works_battery", "resolved": true}, {"id": "card_works_luhn", "title": "The check digit that catches a mistyped number", "relationship": "adjacent", "why": "Neighbouring worked demonstrations in the same part of the volume.", "href": "/card/card_works_luhn", "resolved": true}]}