Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 982 · 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.🔍 Which is the odd one out? (a) use small battery cells (b) take cells out after use (c) touch a switch when wet (d) fly kites in open fields
2. 2.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
3. 3.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
4. 4.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
5. 5.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
6. 6.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
7. 7.Which of these is a conductor? (a) a paper strip (b) a plastic ruler (c) a wooden stick (d) a brass key
8. 8.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
9. 9.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a copper wire. Does the bulb glow? (a) No (b) Yes
10. 10.Which of these is safe? (a) throw cells in a fire (b) stay away from pylons (c) use mains for a project (d) touch a switch when wet
11. 11.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
13. 13.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
14. 14.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
15. 15.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
16. 16.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) wire (b) diode (c) LED (d) bulb
17. 17.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
18. 18.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
19. 19.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
20. 20.🔍 Which is the odd one out? (a) take cells out after use (b) use a cable with cuts (c) stop if a part gets hot (d) fly kites in open fields
21. 21.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) two or more cells joined (d) one single wire
22. 22.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
23. 23.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) touch a switch when wet (b) build with an adult near (c) poke things in a socket (d) throw cells in a fire
25. 25.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
26. 26.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
27. 27.True or false: to stop if a part gets hot is safe. (a) True (b) False
28. 28.Which of these gives us electricity? (a) a water pump (b) a power station (c) a mobile phone (d) a computer
29. 29.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
30. 30.Which drawing is the symbol for a motor? (a) many long-short pairs (b) a small empty box (c) one tall, one short bar (d) a circle with M inside
31. 31.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
32. 32.🔦 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 spoon. Does the bulb glow? (a) Yes (b) No
33. 33.What does a slide switch do? (a) flips up or down (b) closes near a magnet (c) slides side to side (d) springs back when let go
34. 34.Which of these mainly gives out light? (a) a loudspeaker (b) a doorbell (c) a buzzer (d) a torch
35. 35.Which of these is a conductor? (a) a paper strip (b) a rubber band (c) a steel coin (d) a woollen thread
36. 36.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
37. 37.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) cell (c) resistor (d) battery
38. 38.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) a single current path (d) own switch for each bulb
39. 39.🔍 Which is the odd one out? (a) a graphite rod (b) a paper strip (c) a steel coin (d) an iron nail
40. 40.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a parallel circuit (c) a safe circuit (d) a short circuit

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