File size: 17,177 Bytes
7c6ffa6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 | {
"deepseek": {
"ask": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "ask",
"endpoint_label": "Simple Explanation",
"latency_s": 5.14,
"success": false,
"fallback": false,
"error": "429_RATE_LIMIT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "429_RATE_LIMIT"
},
"notes": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "notes",
"endpoint_label": "Smart Notes",
"latency_s": 16.13,
"success": false,
"fallback": false,
"error": "JSON_PARSE_ERROR",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "JSON_PARSE_ERROR"
},
"quiz": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "quiz",
"endpoint_label": "Quiz (5 Qs)",
"latency_s": 3.76,
"success": false,
"fallback": false,
"error": "429_RATE_LIMIT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "429_RATE_LIMIT"
},
"flashcards": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "flashcards",
"endpoint_label": "Flashcards (6)",
"latency_s": 3.29,
"success": false,
"fallback": false,
"error": "429_RATE_LIMIT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "429_RATE_LIMIT"
},
"exam-answer": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "exam-answer",
"endpoint_label": "Exam Answer",
"latency_s": 3.53,
"success": false,
"fallback": false,
"error": "429_RATE_LIMIT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "429_RATE_LIMIT"
},
"last-night": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "last-night",
"endpoint_label": "Last-Night Notes",
"latency_s": 16.07,
"success": true,
"fallback": false,
"error": null,
"output": {
"title": "Electromagnetic Induction - വൈദ്യുതകാന്തിക പ്രേരണം",
"student_level_summary": "A changing magnetic field near a coil induces an electric current in the coil without direct contact. This is the principle behind generators, transformers, and induction cooktops.",
"must_learn_first": [
"Magnetic field (B) and magnetic flux (Φ = BA cosθ)",
"Ohm's law: V = IR",
"Relation between current and magnetic field (right-hand rule)"
],
"simple_explanation": "When a magnet moves through a coil, the coil experiences a change in magnetic flux, which creates an induced emf. This emf drives a current that opposes the motion of the magnet (Lenz's Law). The faster the change, the larger the induced emf. This is how generators produce electricity and transformers change voltage.",
"key_points": [
"Faraday's 1st law: A change in magnetic flux through a coil induces an emf.",
"Faraday's 2nd law: Induced emf is directly proportional to rate of change of flux. Formula: ε = –dΦ/dt [SI: Volt (V)]",
"Lenz's law: Induced current opposes the cause that produces it; ensures conservation of energy.",
"Motional emf: When a conductor moves perpendicular to B, ε = Blv [SI: V].",
"Self-inductance: Coil opposes change in its own current; ε = –L(dI/dt) [L in Henry (H)].",
"Mutual inductance: two coils; ε₂ = –M(dI₁/dt) [M in Henry (H)].",
"Transformer: Vs/Vp = Ns/Np = Ip/Is; step-up if Ns > Np; step-down if Ns < Np.",
"AC generator: ε = NBAω sin(ωt); peak emf ε₀ = NBAω.",
"Eddy currents: induced currents in bulk metal; reduced by lamination; used in braking and heating."
],
"important_definitions": [
"Magnetic flux: The total magnetic field passing through a given area. Φ = B·A·cosθ, SI unit weber (Wb).",
"Faraday's first law of electromagnetic induction: Whenever the magnetic flux linked with a coil changes, an emf is induced in the coil.",
"Faraday's second law: The induced emf is directly proportional to the rate of change of magnetic flux. ε = –dΦ/dt",
"Lenz's law: The direction of induced current is such that it opposes the cause that produced it.",
"Self-inductance: The property of a coil by which it opposes any change in the current flowing through it. ε = –L(dI/dt), unit henry (H).",
"Mutual inductance: The property by which a change in current in one coil induces an emf in a nearby coil. ε₂ = –M(dI₁/dt)"
],
"formulas": [
"Faraday's law: ε = –dΦ/dt [SI: volt (V)]; condition: any change in flux.",
"Motional emf: ε = Blv [V]; condition: conductor of length l moves perpendicular to uniform B field with velocity v.",
"Self-inductance: ε = –L(dI/dt) [L in henry (H)]; condition: for a single coil.",
"Energy in inductor: U = ½LI² [J]",
"Mutual inductance: ε₂ = –M(dI₁/dt) [M in H]",
"Transformer relation: Vs/Vp = Ns/Np = Ip/Is",
"Transformer efficiency: η = (Vs·Is)/(Vp·Ip) × 100%",
"AC generator emf: ε = NBAω sin(ωt) = ε₀ sin(ωt), with ε₀ = NBAω [V]; condition: coil rotates in uniform B field.",
"Magnetic flux: Φ = BA cosθ [Wb]"
],
"diagrams_to_practice": [
"AC generator (alternator) with labelled parts: armature coil, field magnet, slip rings, brushes",
"Step-up and step-down transformer with labelled primary, secondary, core, laminated sheets",
"Eddy current experiment: metal disc swinging between magnet poles",
"Motional emf: conductor moving on U-shaped rails in magnetic field (used in Kerala HSE 4-mark questions)"
],
"exam_keywords": [
"Induced emf",
"Rate of change of magnetic flux",
"Lenz's law (opposes the cause)",
"Motional emf (Blv)",
"Self-inductance (L)",
"Mutual inductance (M)",
"Step-up / step-down transformer",
"Peak emf (ε₀ = NBAω)",
"Eddy currents (lamination)",
"Conservation of energy"
],
"memory_tricks": [
"FLux Change → EMF: 'Faraday's Law says: Change Clips EMF'",
"Lenz's Law Negative Sign: 'Lenz says NO to change' (think of 'negative' = opposition)",
"Transformer formula: Vp/Vs = Np/Ns → 'Voltage per turn is same' (Vp per Np = Vs per Ns)",
"AC Generator: ε₀ = NBAω → 'NBA Omega' sounds like 'NBA woah!' (woah = ω)",
"Eddy currents reduced by lamination → 'Lamination stops eddy mission'"
],
"possible_exam_questions": [
"State and prove Faraday's Laws of Electromagnetic Induction. (4 marks)",
"State Lenz's Law. Explain with an example why it is a consequence of conservation of energy. (3 marks)",
"Derive the expression for motional emf. (3 marks) [Kerala HSE common]",
"Explain the principle, construction and working of an AC generator with a labelled diagram. (5 marks)",
"Distinguish between self-inductance and mutual inductance. (2 marks)",
"What are eddy currents? Give two applications and mention how they are minimised. (2 marks)",
"A coil of 200 turns, area 0.05 m², is placed perpendicular to a magnetic field of 0.1 T. If the field reverses in 0.02 s, find the induced emf. (3 marks) [Answer: 100 V]",
"An inductor of self-inductance 0.5 H carries a current of 2 A. Calculate the energy stored. (2 marks) [Answer: 1 J]"
],
"last_minute_revision": [
"Faraday's 1st + 2nd: ε = –dΦ/dt, emf induced only when flux changes.",
"Lenz's law: direction opposes change; gives negative sign.",
"Motional emf: ε = Blv (conductor perpendicular to field).",
"Self-inductance: ε = –L dI/dt; L in henry.",
"Energy in inductor: U = ½LI².",
"Mutual inductance: ε₂ = –M dI₁/dt.",
"Transformer: Vs/Vp = Ns/Np = Ip/Is; step-up if Ns > Np.",
"AC generator: ε = NBAω sin(ωt); peak = NBAω.",
"Eddy currents: minimised by lamination; used in brakes and induction heating."
],
"quick_check": [
"Q: What is the SI unit of magnetic flux? A: Weber (Wb)",
"Q: What does Lenz's law ensure? A: Conservation of energy.",
"Q: A transformer has 100 primary turns and 200 secondary turns. Is it step-up or step-down? A: Step-up (Vs > Vp)"
]
},
"quality": {
"score": 8,
"max_score": 10,
"keyword_hits": 21,
"formula_hits": 4,
"list_items": 66,
"has_units": false,
"has_marks": true,
"has_lenz": true,
"has_formula": true,
"has_diagram": true,
"is_generic": false
},
"raw_size_chars": 6201
},
"video-plan": {
"model_id": "deepseek/deepseek-v4-flash:free",
"endpoint": "video-plan",
"endpoint_label": "Video Scene Plan",
"latency_s": 3.56,
"success": false,
"fallback": false,
"error": "429_RATE_LIMIT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "429_RATE_LIMIT"
}
},
"llama": {
"ask": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "ask",
"endpoint_label": "Simple Explanation",
"latency_s": 60.91,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
},
"notes": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "notes",
"endpoint_label": "Smart Notes",
"latency_s": 60.1,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
},
"quiz": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "quiz",
"endpoint_label": "Quiz (5 Qs)",
"latency_s": 60.33,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
},
"flashcards": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "flashcards",
"endpoint_label": "Flashcards (6)",
"latency_s": 60.44,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
},
"exam-answer": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "exam-answer",
"endpoint_label": "Exam Answer",
"latency_s": 59.11,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
},
"last-night": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "last-night",
"endpoint_label": "Last-Night Notes",
"latency_s": 60.11,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
},
"video-plan": {
"model_id": "meta-llama/llama-3.3-70b-instruct:free",
"endpoint": "video-plan",
"endpoint_label": "Video Scene Plan",
"latency_s": 60.41,
"success": false,
"fallback": false,
"error": "TIMEOUT",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "TIMEOUT"
}
},
"gpt_oss": {
"ask": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "ask",
"endpoint_label": "Simple Explanation",
"latency_s": 0.13,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"notes": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "notes",
"endpoint_label": "Smart Notes",
"latency_s": 0.11,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"quiz": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "quiz",
"endpoint_label": "Quiz (5 Qs)",
"latency_s": 0.04,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"flashcards": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "flashcards",
"endpoint_label": "Flashcards (6)",
"latency_s": 0.04,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"exam-answer": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "exam-answer",
"endpoint_label": "Exam Answer",
"latency_s": 0.05,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"last-night": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "last-night",
"endpoint_label": "Last-Night Notes",
"latency_s": 0.04,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"video-plan": {
"model_id": "openai/gpt-oss-120b:free",
"endpoint": "video-plan",
"endpoint_label": "Video Scene Plan",
"latency_s": 0.04,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
}
},
"nemotron": {
"ask": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "ask",
"endpoint_label": "Simple Explanation",
"latency_s": 0.13,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"notes": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "notes",
"endpoint_label": "Smart Notes",
"latency_s": 0.13,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"quiz": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "quiz",
"endpoint_label": "Quiz (5 Qs)",
"latency_s": 0.26,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"flashcards": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "flashcards",
"endpoint_label": "Flashcards (6)",
"latency_s": 0.04,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"exam-answer": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "exam-answer",
"endpoint_label": "Exam Answer",
"latency_s": 0.05,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"last-night": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "last-night",
"endpoint_label": "Last-Night Notes",
"latency_s": 0.05,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
},
"video-plan": {
"model_id": "nvidia/nemotron-3-nano-30b-a3b:free",
"endpoint": "video-plan",
"endpoint_label": "Video Scene Plan",
"latency_s": 0.04,
"success": false,
"fallback": false,
"error": "404_POLICY",
"output": null,
"quality": null,
"raw_size_chars": 0,
"error_category": "404_POLICY"
}
}
} |