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E_E_T_I_I_Y 1.M K S J L 2.C L R C T 3.Y L J D F 4.D Q V Y K
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Energy transformation for an electric fire is: 1.Electrical to light 2.Electrical to heat 3.Heat to electrical 4.Electrical to sound
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Energy transformation for a vacuum cleaner is: 1.Electrical to light 2.Electrical to kinetic 3.Heat to electrical 4.Electrical to heat
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Which power rating is incorrect? 1.Kettle – 200W 2.Light bulb – 60 to a 100W 3.Television – 150W 4.Cooker – 12000W
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The colour for the Live wire in a plug is 1.Blue 2.Brown 3.Yellow/green 4.Purple
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The colour for the Earth wire in a plug is 1.Blue 2.Brown 3.Yellow/green 4.Purple
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For an appliance up to 700W, what is the correct value of fuse? 1.3A 2.5A 3.7A 4.13A
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For an appliance greater than 700W, what is the correct value of fuse? 1.3A 2.5A 3.7A 4.13A
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The Earth wire is always connected to the top pin in a plug 1.True 2.False
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The Live wire is always connected to the fuse pin in a plug 1.True 2.False
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The correct flex must be used with an appliance to … 1.Carry the current without overheating 2.Match colours with the appliance 3.Restrict the flow of current
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An appliance with a higher power rating needs a … 1.Thinner flex 2.Shorter flex 3.Thicker flex 4.Longer flex
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This symbol means 1.Appliance is fire proof 2.Appiance needs a thick flex 3.Appliance can be used under water 4.Appliance is double insulated
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This symbol means 1.3 core flex is used 2.2 core flex is used 3.No flex is used
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Which statement is true? 1.Mains supply is d.c. and battery supply is d.c. 2.Mains supply is a.c. and battery supply is a.c 3.Mains supply is d.c. and battery supply is a.c 4.Mains supply is a.c. and battery supply is d.c
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The mains voltage is 1.240V 2.230V 3.320V 4.340V
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The mains frequency is 1.40Hz 2.50Hz 3.40kHz 4.50Mhz
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Alternating current (a.c.) 1.Changes direction sometimes. 2.Changes direction many times a second 3.Is always in the same direction (positive to negative) 4.Is always in the same direction (negative to positive)
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Direct current (d.c.) 1.Changes direction sometimes. 2.Changes direction many times a second 3.Is always in the same direction (positive to negative) 4.Is always in the same direction (negative to positive)
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Charge has the symbol ___ and is measured in _____. 1.C and Amps 2.Q and Amps 3.C and Coulombs 4.Q and Coulombs
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Charge, current and time are related by the equation: 1.Q = I x t 2.I = Q x t 3.t = I x Q 4.Q = I 2 x t
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The voltage of a supply is a measure of the Energy given to the charges in a circuit. 1.True 2.False
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What is the current when 600C of charge is transferred in 5 mins? 1.3000V 2.120A 3.3000A 4.2A
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Current is measured using 1.Ammeter 2.Voltmeter 3.Ohmmeter 4.Stop watch
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A voltmeter is always placed in parallel 1.True 2.False
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An ammeter is always placed in parallel 1.True 2.False
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Ohms laws is 1.R = V x I 2.I = V x R 3.V = I x R 4.P = I 2 x R
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What current can a 230V supply produce in a 1kilohm resistor 1.23A 2.230A 3.2.3mA 4.230mA
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Energy has the symbol E and is measured in ___ 1.Watts (W) 2.Amps (A) 3.Coulombs (C) 4.Joules (J)
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Energy is related to Power and time through the equation 1.E = P/t 2.E = Pt 3.E = P 2 t 4.P = Et
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What is the current through a 2kW heater connected to a 240V supply 1.8.3A 2.480A 3.120A 4.0.48A
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What is the expression that relates Power, Current and Resistance? 1.P=IR 2.P=IV 3.P=I 2 R 4.P=I 2 V
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The energy change in a filament lamp is 1.Light to electrical 2.Electrical to light 3.Electrical to heat and light 4.Electrical to heat
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For a filament lamp, the energy change takes place in the … 1.Gas 2.Glass 3.Resistance wire 4.Imagination
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For a fluorescent tube, the energy change takes place in the … 1.Gas 2.Glass 3.Resistance wire 4.Imagination
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How long does it take for a 2.5kW fire to use 30MJ of energy? 1.200mins 2.1200mins 3.1200s 4.75s
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What is the power dissipated in a 10ohm resistor with 50mA through it? 1.25W 2.100W 3.0.25W 4.25mW
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The current in a series circuit 1.Is the same throughout the circuit if all components are the same 2.Is the same throughout the circuit 3.Is less than the supply 4.Splits across the various components
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The current in a parallel circuit 1.Is the same throughout the circuit if all components are the same 2.Is the same throughout the circuit 3.Is less than the supply 4.Splits across the various components
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The voltage in a series circuit 1.Is the same throughout the circuit if all components are the same 2.Is the same throughout the circuit 3.Is less than the supply 4.Splits across the various components
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The voltage across components in a parallel circuit 1.Is the same across each component. 2.Can be summed to equal the supply voltage
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Which of the equations below is incorrect for a series circuit 1.I T = I 1 = I 2 2.V s = V 1 + V 2 3.I T = I 1 + I 2 4.R T = R 1 + R 2
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Which of the equations below is incorrect for a parallel circuit 1.I T = V T / R T 2.V s = V 1 = V 2 3.I T = I 1 + I 2 4.R T = R 1 + R 2
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A 6 Ohm and 3 Ohm resistor are in parallel. What is their total resistance? 1.3 Ohm 2.6 Ohm 3.10 Ohm 4.2 Ohm
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A 6 ohm and 4 Ohm resistor are in series. What is their total resistance? 1.3 Ohm 2.6 Ohm 3.10 Ohm 4.2 Ohm
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I have a 1 Ohm resistor and I place several other resistors that are higher in value in parallel. Does the total resistance 1.Increase 2.Decrease 3.Stay the same
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Team Scores 3167Team 3 3067Team 5 2767Team 1 2733Team 4 2683Team 2
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