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E_E_T_I_I_Y

6 of 20. 0. E_E_T_I_I_Y. M K S J L C L R C T Y L J D F D Q V Y K. 16 of 20. 0. Energy transformation for an electric fire is:. Electrical to light Electrical to heat Heat to electrical Electrical to sound. 17 of 20. 0. Energy transformation for a vacuum cleaner is:.

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E_E_T_I_I_Y

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  1. 6 of 20 0 E_E_T_I_I_Y • M K S J L • C L R C T • Y L J D F • D Q V Y K

  2. 16 of 20 0 Energy transformation for an electric fire is: • Electrical to light • Electrical to heat • Heat to electrical • Electrical to sound

  3. 17 of 20 0 Energy transformation for a vacuum cleaner is: • Electrical to light • Electrical to kinetic • Heat to electrical • Electrical to heat

  4. 15 of 20 0 Which power rating is incorrect? • Kettle – 200W • Light bulb – 60 to a 100W • Television – 150W • Cooker – 12000W

  5. 17 of 20 10 The colour for the Live wire in a plug is • Blue • Brown • Yellow/green • Purple

  6. 16 of 20 6 The colour for the Earth wire in a plug is • Blue • Brown • Yellow/green • Purple

  7. 11 of 20 0 For an appliance up to 700W, what is the correct value of fuse? • 3A • 5A • 7A • 13A

  8. 16 of 20 10 For an appliance greater than 700W, what is the correct value of fuse? • 3A • 5A • 7A • 13A

  9. 15 of 20 0 The Earth wire is always connected to the top pin in a plug • True • False

  10. 15 of 20 9 The Live wire is always connected to the fuse pin in a plug • True • False

  11. 15 of 20 0 The correct flex must be used with an appliance to … • Carry the current without overheating • Match colours with the appliance • Restrict the flow of current

  12. 16 of 20 9 An appliance with a higher power rating needs a … • Thinner flex • Shorter flex • Thicker flex • Longer flex

  13. 16 of 20 6 This symbol means • Appliance is fire proof • Appiance needs a thick flex • Appliance can be used under water • Appliance is double insulated

  14. 16 of 20 9 This symbol means • 3 core flex is used • 2 core flex is used • No flex is used

  15. 14 of 20 0 Which statement is true? • Mains supply is d.c. and battery supply is d.c. • Mains supply is a.c. and battery supply is a.c • Mains supply is d.c. and battery supply is a.c • Mains supply is a.c. and battery supply is d.c

  16. 15 of 20 0 The mains voltage is • 240V • 230V • 320V • 340V

  17. 16 of 20 8 The mains frequency is • 40Hz • 50Hz • 40kHz • 50Mhz

  18. 14 of 20 0 Alternating current (a.c.) • Changes direction sometimes. • Changes direction many times a second • Is always in the same direction (positive to negative) • Is always in the same direction (negative to positive)

  19. 16 of 20 0 Direct current (d.c.) • Changes direction sometimes. • Changes direction many times a second • Is always in the same direction (positive to negative) • Is always in the same direction (negative to positive)

  20. 17 of 20 9 Charge has the symbol ___ and is measured in _____. • C and Amps • Q and Amps • C and Coulombs • Q and Coulombs

  21. 16 of 20 2 Charge, current and time are related by the equation: • Q = I x t • I = Q x t • t = I x Q • Q = I2 x t

  22. 16 of 20 0 The voltage of a supply is a measure of the Energy given to the charges in a circuit. • True • False

  23. 16 of 20 0 What is the current when 600C of charge is transferred in 5 mins? • 3000V • 120A • 3000A • 2A

  24. 16 of 20 1 Current is measured using • Ammeter • Voltmeter • Ohmmeter • Stop watch

  25. 12 of 20 0 A voltmeter is always placed in parallel • True • False

  26. 16 of 20 1 An ammeter is always placed in parallel • True • False

  27. 15 of 20 6 Ohms laws is • R = V x I • I = V x R • V = I x R • P = I2 x R

  28. 8 of 20 0 What current can a 230V supply produce in a 1kilohm resistor • 23A • 230A • 2.3mA • 230mA

  29. 16 of 20 8 Energy has the symbol E and is measured in ___ • Watts (W) • Amps (A) • Coulombs (C) • Joules (J)

  30. 15 of 20 0 Energy is related to Power and time through the equation • E = P/t • E = Pt • E = P2t • P = Et

  31. 13 of 20 7 What is the current through a 2kW heater connected to a 240V supply • 8.3A • 480A • 120A • 0.48A

  32. 16 of 20 9 What is the expression that relates Power, Current and Resistance? • P=IR • P=IV • P=I2R • P=I2 V

  33. 16 of 20 2 The energy change in a filament lamp is • Light to electrical • Electrical to light • Electrical to heat and light • Electrical to heat

  34. 16 of 20 4 For a filament lamp, the energy change takes place in the … • Gas • Glass • Resistance wire • Imagination

  35. 16 of 20 0 For a fluorescent tube, the energy change takesplace in the … • Gas • Glass • Resistance wire • Imagination

  36. 15 of 20 0 How long does it take for a 2.5kW fire to use 30MJ of energy? • 200mins • 1200mins • 1200s • 75s

  37. 14 of 20 0 What is the power dissipated in a 10ohm resistor with 50mA through it? • 25W • 100W • 0.25W • 25mW

  38. 17 of 20 1 The current in a series circuit • Is the same throughout the circuit if all components are the same • Is the same throughout the circuit • Is less than the supply • Splits across the various components

  39. 1 of 20 10 The current in a parallel circuit • Is the same throughout the circuit if all components are the same • Is the same throughout the circuit • Is less than the supply • Splits across the various components

  40. 15 of 20 9 The voltage in a series circuit • Is the same throughout the circuit if all components are the same • Is the same throughout the circuit • Is less than the supply • Splits across the various components

  41. 13 of 20 0 The voltage across components in a parallel circuit • Is the same across each component. • Can be summed to equal the supply voltage

  42. 17 of 20 10 Which of the equations below is incorrect for a series circuit • IT = I1 = I2 • Vs= V1 + V2 • IT = I1 + I2 • RT = R1 + R2

  43. 14 of 20 0 Which of the equations below is incorrect for a parallel circuit • IT = VT / RT • Vs= V1 = V2 • IT = I1 + I2 • RT = R1 + R2

  44. 15 of 20 8 A 6 Ohm and 3 Ohm resistor are in parallel. What is their total resistance? • 3 Ohm • 6 Ohm • 10 Ohm • 2 Ohm

  45. 17 of 20 0 A 6 ohm and 4 Ohm resistor are in series. What is their total resistance? • 3 Ohm • 6 Ohm • 10 Ohm • 2 Ohm

  46. I have a 1 Ohm resistor and I place several other resistors that are higher in value in parallel. Does the total resistance • Increase • Decrease • Stay the same

  47. Team Scores

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