ELECTRICAL QUANTITIES

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CHAPTER 2

• ELECTRICAL QUANTITIES
• AND OHMS LAW

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OBJECTIVE.

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

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COULOMB IS A QUANTITY OF MEASUREMENT FOR
ELECTRONS6,250,000,000,000,000,000
AMPELECTRICAL MEASUREMENT OF FLOW OF ELECTRONS1
COULOMB PER SECOND
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AMPS

• MEASURE OF CURRENT FLOW IN A CIRCUIT
• WATER EXAMPLEGALLONS PER MINUTE
• OHMS LAW SYMBOL FOR AMPS IS I

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IT WOULD TAKE 1.3 SECONDS FOR THE LIGHT TO COME
ON
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VOLTAGE

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

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RESISTANCE IN A CIRCUIT USES UP THE VOLTAGE
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RESISTANCE

• OHMUNIT OF RESISTANCE TO CURRENT FLOW NAMED
  AFTER GEORGE OHM
• OHMS LAW SYMBOL IS R

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WATT

• UNIT OF POWER IN A CIRCUIT
• OHMS LAW SYMBOL IS P
• LIGHT BULBS WATER HEATERS HOUSE ELECTRIC METERS
• POWERCURRENT X VOLTAGE

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EI x R IE/R RE/I
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LETS REVIEW...

• WHAT IS AN AMP?
• OHMS LAW SYMBOL FOR AN AMP?
• WHAT IS VOLTAGE?
• WHAT IS OHMS LAW SYMBOL FOR VOLTAGE?

• WHAT IS AN OHM?
• UNIT OF MEASURE FOR POWER?
• OHMS LAW FORMULA?
• OHMS LAW STATES?
• OHMS POWER FORMULA?
• METRIC PREFIXES?

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THATS ALL..