Current Electricity (Part 3) | Resistors, Series & Parallel | Class 12 Physics CBSE | JEE/NEET/CUET

Описание: Master “Resistors & Combinations” from Current Electricity (Class 12 Physics, CBSE/NCERT) for Boards + JEE Main, NEET & CUET.
In this Part-3 session, we build intuition for why resistors are needed, identify series vs parallel from circuit diagrams, and derive equivalent resistance using Ohm’s Law (V = IR). We also cover fixed vs variable resistor (Rheostat), current division, and potential distribution—exactly the skills you need for exams and fast MCQ solving.

Part 1 -    • Current Electricity Part 1 Ch 3 Electric, ...  
Part 2 -    • Current Electricity Part 2 | Ohm’s Law, Re...  

What this video covers
What is Resistance? electron collisions, limiting excessive current, heating & safety
Resistors as passive components; symbols & when to use external resistance
Fixed vs Variable resistor (Rheostat): symbol with arrow, use-cases
Parallel combination: how to identify (common nodes), V same / I different, current division
Series combination: chain connection, I same / V different
Series and parallel formulas:

Why this matters (Exam relevance)
CBSE/NCERT Boards (Class 12 Physics): direct numericals & reasoning on series/parallel, equivalent resistance, and Ohm’s Law steps.
JEE Main / NEET / CUET: frequent MCQs on identifying combinations, I–V distribution, and fast substitution with the right formula.
IB/IGCSE: concept clarity on potential/current in networks and practical components.

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