Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 446 · 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.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
2. 2.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) one for each bulb (d) none
3. 3.What does a toggle switch do? (a) stays where you flip it (b) works only while pressed (c) closes near a magnet (d) slides side to side
4. 4.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they explode (d) they all go out
5. 5.🔘 Which kind of switch springs back when let go? (a) a push button (b) a tilt switch (c) a slide switch (d) a reed switch
6. 6.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
7. 7.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) Yes (b) No
9. 9.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
10. 10.True or false: a dot where wires meet is the symbol for a bulb. (a) False (b) True
11. 11.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
12. 12.🔍 Which is the odd one out? (a) a dry cork (b) aluminium foil (c) a paper strip (d) a ceramic cup
13. 13.💡 2 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
14. 14.What does a toggle switch do? (a) springs back when let go (b) flips up or down (c) closes when tipped over (d) slides side to side
15. 15.True or false: to build with an adult near is not safe. (a) True (b) False
16. 16.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) to save copper only (d) each gets full voltage
17. 17.🔍 Which is the odd one out? (a) stay away from pylons (b) keep drinks far away (c) poke things in a socket (d) build with an adult near
18. 18.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 5 is taken out of its holder. How many bulbs glow?
19. 19.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) bulb (b) voltmeter (c) cell (d) resistor
20. 20.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
21. 21.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
22. 22.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
23. 23.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
24. 24.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) No (b) Yes
26. 26.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
27. 27.Which of these means the circuit is closed? (a) the loop is complete (b) the switch is OFF (c) a wire has come loose (d) the bulb is unscrewed
28. 28.True or false: a wooden stick is a conductor. (a) False (b) True
29. 29.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
30. 30.🔘 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 OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
31. 31.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
32. 32.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) a single current path (d) many paths for current
33. 33.✏️ In a circuit diagram, which part is drawn as a straight line? (a) battery (b) voltmeter (c) wire (d) ammeter
34. 34.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
35. 35.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
36. 36.Which of these is true of a series circuit? (a) one bulb out, all go out (b) many paths for current (c) used in house wiring (d) own switch for each bulb
37. 37.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
38. 38.🔘 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 ON, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
39. 39.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) No (b) Yes
40. 40.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel

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