ELECTRICITY PPT COMPILED EDITED BY MUKESH KUMAR CHHIPA

ELECTRICITY PPT COMPILED & EDITED BY MUKESH KUMAR CHHIPA TGT WE K V 2 AJMER (RAJ. ) 9269048633(M)

Electricity Theory VIR PIV and Capacitors!!!

PEg Energy o When an object is at some height in a gravitational field it is said to have gravitational potential energy, PEg

Potential Difference

Potential Difference o Back to the zero point A convenient zero point to chose in a circuit or any electric system is the “ground”

Battery (cells) o A battery produces electricity by transforming chemical energy into electrical energy

Battery Carbon Electrode Sulfuric Acid + Zinc Electrode

Capacitor o o A capacitor is a storehouse of charge and energy that can be reclaimed when needed for a specific application A capacitor will only charge to the potential difference between the terminals of the battery

Capacitance o o Capacitance, C: The ability of a conductor to store energy in the form of electrically separated charges Capacitance is the ratio of charge to potential difference

Charge Movement

Circuit Analogy

Types of Current o AC Alternating current charges continuously change direction forward and back at 60 Hz o o Example: outlets (approx 120 V) DC Direct current charges move in one direction o Example: batteries AC-DC Debate births the Electric Chair

Resistance o o Resistance is the impedance of the motion of charge through a conductor The ratio of potential difference across a conductor to the current it carries

Ohm’s Law

Resistance o Depends on: Length, cross sectional area, material, and temperature

Resistance and Temp

Resistance and Thickness

Resistor o o An electronic element that provides a specified resistance. A current or voltage REGULATOR

Power (it’s Electric!) o o Power: Rate at which work is done. OR Rate at which energy is transformed Electric Power: The rate at which charge carriers convert PEE into non-mechanical energy

Reading and Homework o Read Chapter 17 n o pp 593 - 625 HW due on test day: p 599 1 -3; p 601 2, 3, 5 -9; p 607 1 – 4 (B); p 609 1 – 5 p 615 1 – 6; p 616 2 -4, 7, 9 p 621 1 – 5 o Extra Practice p 626 – 628 11, 20 – 54