{
  "schema": "physics-anim-scene",
  "version": 1,
  "annotations": {
    "version": 2,
    "strokes": []
  },
  "physicsEnvironment": {
    "schema": "physics-anim-environment",
    "version": 1,
    "constants": {
      "pixelsPerMeter": 1000,
      "gravityAcceleration": 9.8,
      "coulombK": 8987551792.3
    }
  },
  "pixelsPerMeter": 1000,
  "gravityAcceleration": 9.8,
  "coulombK": 8987551792.3,
  "timeScale": 1,
  "view": {
    "x": 164.47655312266642,
    "y": 26.052610891039933,
    "scale": 0.8160430739825077
  },
  "canvasBackground": {
    "mode": "coordinate",
    "origin": {
      "x": 0,
      "y": 0
    }
  },
  "entities": [
    {
      "id": 1,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 540,
          "y": 63
        },
        "width": 1000,
        "height": 104,
        "text": "**测量小灯泡的电功率**\n\n额定 2.5 V / 0.5 W　｜　电源 4.5 V　｜　变阻器 20 Ω",
        "imageDataUrl": "",
        "imageName": "",
        "imageFit": "contain",
        "imagePosition": "top",
        "imageHeight": 92,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "fontSize": 18,
        "fontWeight": 400,
        "fontFamily": "sans-serif",
        "textAlign": "left",
        "lineHeight": 1.5,
        "padding": 15,
        "borderColor": "#2563eb",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": true,
        "locked": true
      }
    },
    {
      "id": 2,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 540,
          "y": 775
        },
        "width": 1000,
        "height": 108,
        "text": "**测量任务**\n调节滑片，使灯泡电压依次约为 2.0、2.5、2.75 V；记录 U、I，并计算 P = UI。每组记录后及时断开开关。",
        "imageDataUrl": "",
        "imageName": "",
        "imageFit": "contain",
        "imagePosition": "top",
        "imageHeight": 92,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "fontSize": 16,
        "fontWeight": 400,
        "fontFamily": "sans-serif",
        "textAlign": "left",
        "lineHeight": 1.5,
        "padding": 15,
        "borderColor": "#ccdbe8",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": true,
        "locked": true
      }
    },
    {
      "id": 3,
      "type": "CircuitBattery",
      "state": {
        "pos": {
          "x": 240,
          "y": 590
        },
        "rot": 0,
        "locked": false,
        "params": {
          "V": 4.5,
          "negativeTerm": "A",
          "Rint": 0
        }
      }
    },
    {
      "id": 4,
      "type": "CircuitSwitch",
      "state": {
        "pos": {
          "x": 485,
          "y": 590
        },
        "rot": 0,
        "locked": false,
        "params": {
          "closed": false,
          "ideal": true,
          "Ron": 0.0001,
          "Roff": 1000000000,
          "throws": 1,
          "activeThrow": 1
        }
      }
    },
    {
      "id": 5,
      "type": "CircuitRheostat",
      "state": {
        "pos": {
          "x": 800,
          "y": 590
        },
        "rot": 0,
        "locked": false,
        "params": {
          "Rmax": 20,
          "ratio": 1
        }
      }
    },
    {
      "id": 6,
      "type": "CircuitLamp",
      "state": {
        "pos": {
          "x": 510,
          "y": 380
        },
        "rot": 0,
        "locked": false,
        "params": {
          "Vrated": 2.5,
          "Prated": 0.5,
          "coldRatio": 10
        }
      }
    },
    {
      "id": 7,
      "type": "CircuitAmmeter",
      "state": {
        "pos": {
          "x": 780,
          "y": 250.00000000000006
        },
        "rot": 0,
        "locked": false,
        "params": {
          "ideal": true,
          "Rm": 0.0001,
          "negativeTerm": "B",
          "style": "laboratory",
          "range": 1,
          "panelRadius": 50,
          "majorN": 6,
          "minorPerMajor": 5,
          "pointerZeroOffsetDeg": 0
        }
      }
    },
    {
      "id": 8,
      "type": "CircuitVoltmeter",
      "state": {
        "pos": {
          "x": 554.9999999999999,
          "y": 250.00000000000006
        },
        "rot": 0,
        "locked": false,
        "params": {
          "ideal": true,
          "Rv": 1000000,
          "negativeTerm": "B",
          "style": "laboratory",
          "range": 5,
          "panelRadius": 50,
          "majorN": 6,
          "minorPerMajor": 5,
          "pointerZeroOffsetDeg": 0
        }
      }
    },
    {
      "id": 9,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 363.5,
          "y": 590
        },
        "a": {
          "x": 287,
          "y": 590,
          "snap": {
            "kind": "terminal",
            "elementId": "3",
            "term": "B"
          }
        },
        "b": {
          "x": 440,
          "y": 590,
          "snap": {
            "kind": "terminal",
            "elementId": "4",
            "term": "A"
          }
        },
        "snapRadius": 14,
        "routeMode": "manual",
        "routeModeLocked": true,
        "waypoints": [],
        "manualStartAxis": "H",
        "manualEndAxis": "H"
      }
    },
    {
      "id": 10,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 635,
          "y": 590
        },
        "a": {
          "x": 530,
          "y": 590,
          "snap": {
            "kind": "terminal",
            "elementId": "4",
            "term": "B"
          }
        },
        "b": {
          "x": 740,
          "y": 590,
          "snap": {
            "kind": "terminal",
            "elementId": "5",
            "term": "A"
          }
        },
        "snapRadius": 14,
        "routeMode": "manual",
        "routeModeLocked": true,
        "waypoints": [],
        "manualStartAxis": "H",
        "manualEndAxis": "H"
      }
    },
    {
      "id": 11,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 870,
          "y": 436.62
        },
        "a": {
          "x": 960,
          "y": 560,
          "snap": {
            "kind": "junction",
            "junctionId": "960_560"
          }
        },
        "b": {
          "x": 780,
          "y": 313.24000000000007,
          "snap": {
            "kind": "terminal",
            "elementId": "7",
            "term": "LOW"
          }
        },
        "snapRadius": 14,
        "routeMode": "manual",
        "routeModeLocked": true,
        "waypoints": [
          {
            "x": 960,
            "y": 313.24000000000007
          }
        ],
        "manualStartAxis": "V",
        "manualEndAxis": "H"
      }
    },
    {
      "id": 13,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 329,
          "y": 485
        },
        "a": {
          "x": 465,
          "y": 380,
          "snap": {
            "kind": "terminal",
            "elementId": "6",
            "term": "A"
          }
        },
        "b": {
          "x": 193,
          "y": 590,
          "snap": {
            "kind": "terminal",
            "elementId": "3",
            "term": "A"
          }
        },
        "snapRadius": 14,
        "routeMode": "manual",
        "routeModeLocked": true,
        "waypoints": [
          {
            "x": 193,
            "y": 380
          }
        ],
        "manualStartAxis": "H",
        "manualEndAxis": "V"
      }
    },
    {
      "id": 14,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 555,
          "y": 346.62
        },
        "a": {
          "x": 555.0000000000001,
          "y": 313.24,
          "snap": {
            "kind": "terminal",
            "elementId": "8",
            "term": "LOW"
          }
        },
        "b": {
          "x": 555,
          "y": 380,
          "snap": {
            "kind": "terminal",
            "elementId": "6",
            "term": "B"
          }
        },
        "snapRadius": 14,
        "routeMode": "manual",
        "routeModeLocked": true,
        "waypoints": [],
        "manualStartAxis": "V",
        "manualEndAxis": "V"
      }
    },
    {
      "id": 15,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 484.35,
          "y": 346.62
        },
        "a": {
          "x": 503.7000000000001,
          "y": 313.24,
          "snap": {
            "kind": "terminal",
            "elementId": "8",
            "term": "COM"
          }
        },
        "b": {
          "x": 465,
          "y": 380,
          "snap": {
            "kind": "terminal",
            "elementId": "6",
            "term": "A"
          }
        },
        "snapRadius": 14,
        "routeMode": "manual",
        "routeModeLocked": true,
        "waypoints": [
          {
            "x": 465,
            "y": 313.24
          }
        ],
        "manualStartAxis": "H",
        "manualEndAxis": "V"
      }
    },
    {
      "id": 16,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 235,
          "y": 468
        },
        "width": 220,
        "height": 80,
        "text": "**量程**\n0–0.6 A / 0–3 V",
        "imageDataUrl": "",
        "imageName": "",
        "imageFit": "contain",
        "imagePosition": "top",
        "imageHeight": 92,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "fontSize": 16,
        "fontWeight": 400,
        "fontFamily": "sans-serif",
        "textAlign": "left",
        "lineHeight": 1.5,
        "padding": 15,
        "borderColor": "#ccdbe8",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": false,
        "locked": true
      }
    },
    {
      "id": 17,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 598.5,
          "y": 472
        },
        "width": 470,
        "height": 88,
        "text": "**调节顺序**\n先最大阻值，再逐渐减小；以电压表示数确定实验条件。",
        "imageDataUrl": "",
        "imageName": "",
        "imageFit": "contain",
        "imagePosition": "top",
        "imageHeight": 92,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "fontSize": 16,
        "fontWeight": 400,
        "fontFamily": "sans-serif",
        "textAlign": "left",
        "lineHeight": 1.5,
        "padding": 15,
        "borderColor": "#ccdbe8",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": false,
        "locked": true
      }
    },
    {
      "id": 18,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 540,
          "y": 677
        },
        "width": 920,
        "height": 80,
        "text": "**记录表**　U / V　｜　I / A　｜　P = UI / W　｜　R = U/I / Ω",
        "imageDataUrl": "",
        "imageName": "",
        "imageFit": "contain",
        "imagePosition": "top",
        "imageHeight": 92,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "fontSize": 16,
        "fontWeight": 400,
        "fontFamily": "sans-serif",
        "textAlign": "center",
        "lineHeight": 1.5,
        "padding": 15,
        "borderColor": "#ccdbe8",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": true,
        "locked": true
      }
    },
    {
      "id": 19,
      "type": "VariableController",
      "state": {
        "pos": {
          "x": 1201.983924107836,
          "y": 232.24
        },
        "width": 362.6701656114187,
        "height": 132,
        "title": "变量控制器",
        "targetEntityId": "4",
        "propertyKey": "label:闭合",
        "propertyLabel": "闭合",
        "propertyIndex": 5,
        "controlMode": "auto",
        "rangeMode": "auto",
        "minValue": 0,
        "maxValue": 1,
        "sliderStep": 0.01,
        "commitWhileRunning": false,
        "runtimeSmoothingEnabled": true,
        "runtimeMaxRate": 12,
        "runtimeTransitionMode": "smooth",
        "runtimeTransitionDuration": 0.1,
        "showTicks": true,
        "compactMode": false,
        "accentColor": "#0b7285",
        "locked": false
      }
    },
    {
      "id": 20,
      "type": "VariableController",
      "state": {
        "pos": {
          "x": 1201.983924107836,
          "y": 392.62
        },
        "width": 362.6701656114187,
        "height": 132,
        "title": "变量控制器",
        "targetEntityId": "5",
        "propertyKey": "label:滑片位置(0~1)",
        "propertyLabel": "滑片位置(0~1)",
        "propertyIndex": 4,
        "controlMode": "continuous",
        "rangeMode": "auto",
        "minValue": 0,
        "maxValue": 1,
        "sliderStep": 0.0001,
        "commitWhileRunning": false,
        "runtimeSmoothingEnabled": true,
        "runtimeMaxRate": 12,
        "runtimeTransitionMode": "smooth",
        "runtimeTransitionDuration": 0.1,
        "showTicks": true,
        "compactMode": false,
        "accentColor": "#0b7285",
        "locked": false
      }
    },
    {
      "id": 22,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 641.85,
          "y": 346.62
        },
        "a": {
          "x": 555,
          "y": 380,
          "snap": {
            "kind": "terminal",
            "elementId": "6",
            "term": "B"
          }
        },
        "b": {
          "x": 728.7,
          "y": 313.24000000000007,
          "snap": {
            "kind": "terminal",
            "elementId": "7",
            "term": "COM"
          }
        },
        "snapRadius": 14,
        "routeMode": "auto",
        "routeModeLocked": true,
        "waypoints": [],
        "manualStartAxis": "",
        "manualEndAxis": ""
      }
    },
    {
      "id": 23,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 910,
          "y": 575
        },
        "a": {
          "x": 860,
          "y": 590,
          "snap": {
            "kind": "terminal",
            "elementId": "5",
            "term": "B"
          }
        },
        "b": {
          "x": 960,
          "y": 560,
          "snap": {
            "kind": "junction",
            "junctionId": "960_560"
          }
        },
        "snapRadius": 14,
        "routeMode": "auto",
        "routeModeLocked": true,
        "waypoints": [],
        "manualStartAxis": "",
        "manualEndAxis": ""
      }
    },
    {
      "id": 24,
      "type": "CircuitWire",
      "state": {
        "pos": {
          "x": 902.8,
          "y": 568
        },
        "a": {
          "x": 960,
          "y": 560,
          "snap": {
            "kind": "junction",
            "junctionId": "960_560"
          }
        },
        "b": {
          "x": 845.6,
          "y": 576,
          "snap": {
            "kind": "terminal",
            "elementId": "5",
            "term": "W"
          }
        },
        "snapRadius": 14,
        "routeMode": "auto",
        "routeModeLocked": true,
        "waypoints": [],
        "manualStartAxis": "",
        "manualEndAxis": ""
      }
    }
  ]
}