Current Electricity Part 2: Ohm’s Law, Temp. Effect, EMF & Internal Resistance | Class 12 | JEE/NEET

Описание: Master Current Electricity Part 2 — bridge from basics to full circuit analysis for Class 12 Boards, JEE Main 2026, and NEET UG. PDF notes and related playlists below.

Timestamps
00:00 – Introduction
00:27 – Ohm’s Law (V ∝ I, V = IR at constant temperature)
01:02 – Resistance (definition, units)
01:40 – Factors Affecting Resistance (L, A; R = ρL/A)
02:47 – Resistivity vs Conductivity (σ = 1/ρ)
03:07 – Current Density (J = I/A)
04:11 – Vector Form of Ohm’s Law (J = σE)
04:45 – Relation with Drift Velocity
05:18 – Temperature Dependence of Resistance
07:46 – Temperature Coefficient (α) and Formulae
09:13 – R–T Relation (RT = R0[1 + α(t − t0)])
10:51 – Numericals (Temperature Coefficient – Copper Wire)
12:57 – Numericals (Resistance Thermometer)
14:09 – Resistor Combinations (Series & Parallel)
18:09 – EMF (Definition, Work per Unit Charge)
20:46 – Internal Resistance (r)
22:03 – Terminal Voltage (V) and Relationships
24:16 – Derivations & Key Formulae (I = E/(R + r), V = IR)
25:10 – Numericals (Max Current Case)
26:52 – Numericals (Battery with Internal + External Resistance)
28:59 – Wrap-up & Next Part (Kirchhoff’s Laws)

PDF Notes
Download the PDF: [Download PDF Notes](https://www.youtube.com/redirect?even...)

Playlists and Related
[Current Electricity Part 1: Electric Current & Drift Velocity | Class 12 | JEE/NEET | CBSE 2026](   • Current Electricity Part 1: Electric Curre...  )
[Alternating Current (AC) — Class 12 Physics Playlist](   • Alternating Current (AC) - Part 1 | Introd...  )
[One Shot Series — Complete Class 12 Physics (Boards/JEE/NEET)](   • Electromagnetic Waves Class 12 Physics | F...  )
[Electromagnetic Induction (EMI) — Class 12 | Boards/NEET/JEE | PYQs + Notes](   • Electromagnetic Induction | Part 1 | Farad...  )
[Backbencher’s Physics](   / @backbencher-physics  )

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