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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 947 · 40 questions
TalentJR

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

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  1. 1.🔘 Which kind of switch stays where you flip it? (a) a tilt switch (b) a slide switch (c) a toggle switch (d) a reed switch
  2. 2.🔍 Which is the odd one out? (a) a copper wire (b) a glass marble (c) a rubber eraser (d) a dry cork
  3. 3.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
  4. 4.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to make bulbs dim (d) to save copper only
  6. 6.True or false: a toggle switch flips up or down. (a) True (b) False
  7. 7.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) both of them (c) none (d) only one
  8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) a plastic ruler (c) a steel spoon (d) a metal paper clip
  9. 9.Which of these uses electricity? (a) a television (b) a generator (c) a power station (d) a bicycle dynamo
  10. 10.What does a reed switch do? (a) flips up or down (b) closes when tipped over (c) closes near a magnet (d) slides side to side
  11. 11.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a cotton thread. Does the bulb glow? (a) Yes (b) No
  12. 12.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) Yes (b) No
  13. 13.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
  14. 14.True or false: if a wire has come loose, the circuit is open and no current flows. (a) True (b) False
  15. 15.True or false: to keep drinks far away is safe. (a) True (b) False
  16. 16.Which drawing is the symbol for a wire? (a) one tall, one short bar (b) a line lifted at a gap (c) a straight line (d) a circle with an X in it
  17. 17.🔍 Which is the odd one out? (a) an electric toy car (b) an exhaust fan (c) a street light (d) a mixer grinder
  18. 18.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) plastic (d) copper
  19. 19.Which of these gives us electricity? (a) a television (b) a solar panel (c) a water pump (d) a computer
  20. 20.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
  21. 21.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
  22. 22.True or false: a tilt switch slides side to side. (a) True (b) False
  23. 23.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
  24. 24.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) voltmeter (b) ammeter (c) switch (d) battery
  25. 25.True or false: a cotton thread is a conductor. (a) True (b) False
  26. 26.True or false: a rubber eraser is an insulator. (a) False (b) True
  27. 27.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
  28. 28.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) symbols are heavier (d) to hide the circuit
  29. 29.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper strip (c) a wooden stick (d) a brass key
  30. 30.Which of these is not safe? (a) keep drinks far away (b) dry your hands first (c) fly kites in open fields (d) touch a switch when wet
  31. 31.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
  32. 32.🔘 A bulb and a cell are joined through 5 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
  33. 33.🔍 Which is the odd one out? (a) a copper wire (b) a safety pin (c) a dry cork (d) a brass key
  34. 34.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
  35. 35.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) No (b) Yes
  36. 36.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) an open circuit (c) a full circuit (d) a series circuit
  37. 37.True or false: a dot where wires meet is the symbol for a cell. (a) False (b) True
  38. 38.🔋 How many 3 V cells must be joined in series to give 6 V?
  39. 39.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a push button (c) a slide switch (d) a tilt switch
  40. 40.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) voltmeter (b) bulb (c) junction (d) ammeter

Answer key

  1. a toggle switch
  2. a copper wire
  3. series
  4. a conductor
  5. each gets full voltage
  6. True
  7. both of them
  8. a plastic ruler
  9. a television
  10. closes near a magnet
  11. No
  12. No
  13. False
  14. True
  15. True
  16. a straight line
  17. a street light
  18. copper
  19. a solar panel
  20. True
  21. True
  22. False
  23. series
  24. battery
  25. False
  26. True
  27. safe
  28. quick and clear for all
  29. a brass key
  30. touch a switch when wet
  31. No
  32. 5
  33. a dry cork
  34. True
  35. No
  36. an open circuit
  37. False
  38. 2
  39. a push button
  40. bulb

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