CHAPTER 2 ELECTRICAL QUANTITIES AND OHM’S LAW. OBJECTIVE. AFTER TODAY, STUDENTS WILL UNDERSTAND THE ELECTRICAL VALUES OF AMPS, VOLTS, OHMS,AND WATTS.

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Presentation transcript:

CHAPTER 2 ELECTRICAL QUANTITIES AND OHM’S LAW

OBJECTIVE. AFTER TODAY, STUDENTS WILL UNDERSTAND THE ELECTRICAL VALUES OF AMPS, VOLTS, OHMS,AND WATTS. STUDENTS WILL ALSO BE ABLE TO SOLVE PROBLEMS USING OHM’S LAW TO FIND VOLTAGE, CURRENT, RESISTANCE AND POWER.

COULOMB: IS A QUANTITY OF MEASUREMENT FOR ELECTRONS=6,250,000,000,000,000,000 AMP:ELECTRICAL MEASUREMENT OF FLOW OF ELECTRONS=1 COULOMB PER SECOND

AMPS MEASURE OF CURRENT FLOW IN A CIRCUIT WATER EXAMPLE=GALLONS PER MINUTE OHM’S LAW SYMBOL FOR AMPS IS I

IT WOULD TAKE 1.3 SECONDS FOR THE LIGHT TO COME ON

VOLTAGE ELECTROMOTIVE FORCE (EMF) IT IS THE FORCE THAT PUSHES ELECTRONS THROUGH A WIRE ELECTRICAL PRESSURE(POTENTIAL) OHM’S LAW SYMBOL FOR VOLTAGE IS E

RESISTANCE IN A CIRCUIT USES UP THE VOLTAGE

RESISTANCE OHM=UNIT OF RESISTANCE TO CURRENT FLOW; NAMED AFTER GEORGE OHM OHM’S LAW SYMBOL IS R

WATT UNIT OF POWER IN A CIRCUIT OHM’S LAW SYMBOL IS P LIGHT BULBS; WATER HEATERS; HOUSE ELECTRIC METERS POWER=CURRENT X VOLTAGE

E=I x R I=E/R R=E/I

LETS REVIEW…... WHAT IS AN AMP? OHM’S LAW SYMBOL FOR AN AMP? WHAT IS VOLTAGE? WHAT IS OHM’S LAW SYMBOL FOR VOLTAGE? WHAT IS AN OHM? UNIT OF MEASURE FOR POWER? OHM’S LAW FORMULA? OHM’S LAW STATES? OHM’S POWER FORMULA? METRIC PREFIXES?

THAT’S ALL…..