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CHAPTER 2

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.

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CHAPTER 2

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  1. CHAPTER 2 ELECTRICAL QUANTITIES AND OHM’S LAW

  2. 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.

  3. 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

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

  5. IT WOULD TAKE 1.3 SECONDS FOR THE LIGHT TO COME ON

  6. 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

  7. RESISTANCE IN A CIRCUIT USES UP THE VOLTAGE

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

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

  10. E=I x R I=E/R R=E/I

  11. 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? LETS REVIEW…...

  12. THAT’S ALL…..

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