| { | |
| "title": "Kerala +2 Physics Chapter 6 — Electromagnetic Induction", | |
| "text": "Chapter 6: Electromagnetic Induction\n\nElectromagnetic induction is the process of inducing an electromotive force (EMF) in a conductor by changing the magnetic flux through it.\n\nFaraday's Laws of Electromagnetic Induction:\n1. First Law: Whenever the magnetic flux linked with a conductor changes, an EMF is induced in it.\n2. Second Law: The magnitude of the induced EMF is directly proportional to the rate of change of magnetic flux.\n Formula: e = -dΦ/dt (for single turn)\n Formula: e = -N dΦ/dt (for N turns)\n\nLenz's Law: The direction of induced current is such that it opposes the cause producing it.\n\nSelf-Inductance (L): The property of a coil by which it opposes any change in the current flowing through it.\n Formula: e = -L dI/dt\n\nMutual Inductance (M): The property of two coils by which a change of current in one coil induces an EMF in the other coil.\n\nTransformer:\n- A device that transfers electrical energy between two circuits using electromagnetic induction.\n- Turns ratio: Vs/Vp = Ns/Np\n- Step-up transformer: Ns > Np (increases voltage)\n- Step-down transformer: Ns < Np (decreases voltage)\n\nKey Terms: flux, EMF, inductance, Faraday, Lenz, transformer, solenoid", | |
| "source_type": "syllabus_text", | |
| "subject": "Physics", | |
| "chapter": "Electromagnetic Induction", | |
| "syllabus": "Kerala HSE" | |
| } | |