Summary of Current Electricity Class 12 Physics | NCERT Chapter 3 (Part 1) | CBSE NEET JEE |One Shot
Current Electricity is an important chapter for board exams and competitive exams. It involves the flow of charges, specifically moving charges, which is crucial in understanding electricity. charges, measured in amperes, move in circuits, with one ampere defined as one coulomb of charge flowing in one second. The direction of current flow is opposite to the direction of electron flow. Batteries play a key role in providing electrical energy to circuits.
Valence electrons in conductors carry current by moving randomly. Resistance in conductors depends on length, area, and resistivity, which increases with temperature, affecting current flow. Carbon resistors are commonly used in electronic circuits due to their properties, with color coding on resistors helping determine their Resistance values. Resistors can be connected in series or parallel in circuits for different effects.
Speaker
- Equivalent Resistance in series circuits
Key Points
- Analogies with children holding hands and catching a thief
- Methodology for calculating equivalent Resistance in series circuits
- Exploration of various circuit configurations for calculating equivalent Resistance
- Encouragement to stay tuned for the next part of the Current Electricity series
Notable Quotes
— 79:00 — « So what will happen is that the entire current will go through this five ohm register, so what does it mean and through which register. »
— 85:32 — « These two series, so this means that we can make the arrangement a little more simple. »
— 89:32 — « The net equivalent resistance of this circuit will be two plus two plus two plus two, which is 8 ohms. »
Category
Educational