G9 Unit 6 Electricity

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Formula for Ohm’s Law• V (E) = I x R• I = VR• R = VI
Page 1 and 2: Unit 6:Electricity
Page 3 and 4: What is Electricity?Definition:Elec
Page 5 and 6: Kinds of ElectricityCurrent• The
Page 7 and 8: How does an Electrical Appliance Wo
Page 9 and 10: Electric Charges• Electric charge
Page 11 and 12: Electrical QuantityElectric Current
Page 13 and 14: How to Measure Current?• The SI u
Page 16 and 17: Direct Current (DC)• An electricc
Page 18 and 19: Electrical Potential Difference or
Page 21 and 22: Resistance• When an electric curr
Page 23: Resistance• The SI unit forresist
Page 33: 24
Page 36 and 37: Ohm’s Law• The current that flo
Page 40 and 41: Sample Problem 1:Find the current t
Page 42 and 43: Find the applied voltage of a circu
Page 44 and 45: Sample Problem 5A light bulb uses 2
Page 50 and 51: Electrical Circuitsand Connections
Page 52 and 53: Open and Closed CircuitClosed Circu
Page 54 and 55: Components Found in an Electric Cir
Page 56 and 57: • A switch is an electrical compo
Page 58 and 59: • Bulb• Variable resistor (rheo
Page 60 and 61: Workbook p. 160
Page 64 and 65: Series Circuit•Series Circuit - a
Page 66: Voltage drop•As each device in se
Page 70 and 71: Sample Problem 1A series circuit co
Page 72 and 73: Determine the (a) totalresistance o
Page 74 and 75: The circuit shown contains a 9-volt
Page 76 and 77: 4. Solution- part 2- Use resistance
Page 78 and 79: • Determined the total current in
Page 80 and 81: Sample Problem 5:• Determined the
Page 82 and 83: Parallel Circuits•In parallel cir
Page 84: Parallel Circuit Calculation Rules
Page 87 and 88: 1R t= 1 R 1+ 1 R 2+ 1 R 31R t=1+ 1+
Page 89 and 90:
Sample Problem 1•Find the total c
Page 91 and 92:
Solving Problem 2:1. Looking for:-
Page 93 and 94:
Calculations ofElectrical Energy an
Page 95 and 96:
• Power is measured in watts (W).
Page 97 and 98:
Sample Problem 1:• Samson spends
Page 99 and 100:
Sample Problem 3:• A consumer use
Page 101 and 102:
Calculation of Electricity Cost in
Page 104 and 105:
Sample Problem 1:A household which
Page 106 and 107:
Importance of SafetyPrecaution in t
Page 108 and 109:
Three possible dangers in electrici
Page 110 and 111:
Three possible dangers in electrici
Page 112 and 113:
• Earth wire - a safety wireand c
Page 114 and 115:
• Circuit breakers- Miniature Cir
Page 116:
Earth Leakage Circuit Breaker (ELCB
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G9 Unit 6 Electricity

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