Current electricity | Electric current + Resistors | JEE EAPCET NEET 2027

Subscribe to my channel -    / @physicsclassbykrdmam   telegram channel link https://t.me/physicsclassbykrdmam 0:00 – Intro 1:32 – Topic: Current Electricity (highest weightage) 3:46 – Chapter overview: topics to be covered 5:42 – Electric current: scalar with direction 7:14 – Q&A: lecture length, who should watch this class 14:14 – Water-pipe analogy: why current is scalar 18:13 – Direction of current: high to low potential 19:43 – Flow of electrons vs conventional current 23:42 – Representation, SI unit, formula I = q/t 25:48 – Instantaneous current (dq/dt) 26:32 – Current for charge in circular path (T, f, v & r forms) 31:07 – PYQ problems: charge from I(t) by integration 35:35 – Drift velocity: train-compartment analogy 41:23 – Derivation: v_d = eEτ/m, relaxation time 47:03 – I = nAev_d and mobility 49:24 – Current density J = I/A, J·A cosθ 53:26 – J = σE, conductivity & resistivity formulas 54:41 – Derivation of σ = ne²τ/m, vector form of Ohm's law 57:29 – Reply on Varadhi / job-related comments 1:01:37 – Problem: drift velocity from q(t) 1:03:26 – Non-uniform wire: J and E comparison 1:06:46 – JEE Adv: drift velocity vs distance graph 1:09:20 – JEE Adv: total current from varying J (integration) 1:15:23 – Series wires: drift velocity ratio problems 1:18:57 – Mobility problem 1:20:36 – Notes on Telegram, connectivity issue 1:23:16 – Ohm's law, ohmic vs non-ohmic conductors 1:26:16 – V–I graph slope & resistance problem 1:28:20 – Factors affecting resistance, resistivity ⚡ Current Electricity: Electric Current & Resistors | JEE, EAPCET & NEET | Concepts + Problems In this video, Rama Mam explains Electric Current and Resistors from the Current Electricity chapter in a simple, exam-oriented way. The session covers essential concepts from the basics, important formulas, numerical problems, and question-solving techniques required for JEE Main, EAPCET, and NEET. 📚 Topics Covered: ✅ Meaning and direction of electric current ✅ Electric current formula: I = Q/t ✅ Conventional current and electron flow ✅ Drift velocity and current density ✅ Resistance and factors affecting resistance ✅ Resistivity and conductivity ✅ Ohm’s Law and V–I characteristics ✅ Series and parallel combinations of resistors ✅ Equivalent resistance ✅ Important formulas and shortcuts ✅ Conceptual questions and numerical problems ✅ Exam-oriented problems from basic to advanced level This class is useful for: 🎯 JEE Main and JEE Advanced aspirants 🎯 AP EAPCET and TG EAPCET aspirants 🎯 NEET aspirants 🎯 Class 12 Physics students 🎯 Students who want to strengthen their Current Electricity basics Watch the complete video, solve every problem along with the explanation, and revise the formulas regularly. This session will help you understand the concepts clearly and improve your speed and accuracy in Physics. 👍 Like the video if you find it useful. 📤 Share it with your friends. 🔔 Subscribe to the channel for more JEE, EAPCET and NEET Physics classes by Rama Mam.