CIRCUITS AND CURRENT ELECTRICITY

Jan 24, 2026

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Explore the fundamental concepts of electric circuits, focusing on the role of resistors and factors affecting resistance. Learn how length, width, temperature, and material influence resistance in wires. Delve into mechanical and electrical circuits, energy sources, and various configurations, including series, parallel, and combination circuits. Understand the principles of current flow, Ohm's law, and energy dissipation. We will also cover the applications of ammeters, voltmeters, and understanding ideal versus real batteries.

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CIRCUITS AND CURRENT ELECTRICITY

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CIRCUITS AND CURRENT ELECTRICITY
What do resistors do?
Resistance in wires • Factors affecting resistance • Length • Width • Temperature • material
Mechanical and electrical circuits • Energy source & conversion • Ladder • Battery • Current • Students • charges
Mechanical and electrical circuits • Resistance and energy “loss” • Slide • resistor • Ohmic devices • Power dissipation
Mechanical and electrical circuits • Series • Parallel • Combination circuits
Circuit applications • Voltage divider • two resistors • potentiometer • Current divider (shunt)
Meters in circuits • Ammeters • Voltmeters
Batteries • Internal resistance • Ideal • Real
Conventional current Vs. charge flow • Electron Vs. proton flow