Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 896 · 40 questions

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.

1. 1.What does a reed switch do? (a) closes near a magnet (b) springs back when let go (c) works only while pressed (d) stays where you flip it
2. 2.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
3. 3.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
4. 4.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) each gets full voltage (d) to make bulbs dim
5. 5.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
6. 6.Which of these is an insulator? (a) a graphite rod (b) a rubber band (c) a steel spoon (d) a brass key
7. 7.Which of these gives us electricity? (a) a computer (b) a television (c) a solar panel (d) a mobile phone
8. 8.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) not joined (c) in parallel (d) by Wi-Fi
9. 9.🔋 How many 1.5 V cells must be joined in series to give 9 V?
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) voltmeter (b) battery (c) resistor (d) motor
11. 11.⚠️ Who should be with you when you build a circuit? (a) a trusted adult (b) a stranger online (c) nobody (d) a younger child
12. 12.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is OFF. Does the bulb glow? (a) Yes (b) No
13. 13.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) one out, the rest glow (d) a break stops every bulb
14. 14.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 0.5 V (c) 15 V (d) 230 V
15. 15.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the metal tip (c) the steel shaft (d) the plastic handle
16. 16.What does a push button do? (a) slides side to side (b) closes when tipped over (c) stays where you flip it (d) springs back when let go
17. 17.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to make it colourful (d) to hide the circuit
18. 18.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) a wire has come loose (c) the switch is OFF (d) the switch is ON
19. 19.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
20. 20.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
21. 21.🔍 Which is the odd one out? (a) a ceramic cup (b) a graphite rod (c) a brass key (d) a safety pin
22. 22.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
23. 23.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) bulb (c) ammeter (d) wire
24. 24.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they explode (d) they all go out
25. 25.True or false: to take cells out after use is safe. (a) True (b) False
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) ammeter (b) bulb (c) capacitor (d) battery
27. 27.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
28. 28.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a plastic gap (d) a complete loop
29. 29.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) ammeter (b) motor (c) LED (d) cell
30. 30.True or false: a doorbell mainly makes movement. (a) False (b) True
31. 31.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) a break stops every bulb (d) one bulb out, all go out
32. 32.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
33. 33.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
34. 34.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
35. 35.🔦 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 steel coin. Does the bulb glow? (a) Yes (b) No
36. 36.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) one (c) none (d) two
38. 38.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) used in house wiring (d) a single current path
39. 39.What does a toggle switch do? (a) works only while pressed (b) closes when tipped over (c) springs back when let go (d) stays where you flip it
40. 40.Which of these uses electricity? (a) a generator (b) a washing machine (c) a solar panel (d) a wind turbine

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