Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 620 · 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 should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) bury them in soil (d) cut them open
2. 2.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) many paths for current (d) a break stops every bulb
3. 3.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) Yes (b) No
4. 4.💡 A battery lights 2 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
5. 5.🔘 A bulb and a cell are joined through 6 switches on 6 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
6. 6.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
7. 7.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
8. 8.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a tilt switch
9. 9.🔍 Which is the odd one out? (a) aluminium foil (b) a glass marble (c) a graphite rod (d) an iron nail
10. 10.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) one tall, one short bar (c) a line lifted at a gap (d) a small empty box
11. 11.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
12. 12.🔍 Which is the odd one out? (a) throw cells in a fire (b) poke things in a socket (c) climb an electric pole (d) keep drinks far away
13. 13.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
14. 14.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
15. 15.Which of these mainly makes sound? (a) a water heater (b) a tube light (c) a buzzer (d) an LED lamp
16. 16.Which of these mainly makes movement? (a) a water heater (b) a mixer grinder (c) an LED lamp (d) a toaster
17. 17.True or false: an electric iron mainly gives out heat. (a) False (b) True
18. 18.Which of these is safe? (a) throw cells in a fire (b) use small battery cells (c) use a cable with cuts (d) use mains for a project
19. 19.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
20. 20.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one (d) one for each bulb
21. 21.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
22. 22.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
23. 23.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
24. 24.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a tube light (b) an electric kettle (c) a torch (d) a night lamp
26. 26.🔌 Most metals are good … (a) batteries (b) insulators (c) conductors (d) magnets only
27. 27.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
28. 28.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) a short circuit (c) a safe circuit (d) an open circuit
29. 29.🔍 Which is the odd one out? (a) a metal paper clip (b) a steel spoon (c) a copper wire (d) a dry cork
30. 30.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
31. 31.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
32. 32.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
33. 33.Which of these is true of a series circuit? (a) one out, the rest glow (b) one bulb out, all go out (c) many paths for current (d) used in house wiring
34. 34.🔋 8 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
35. 35.Which drawing is the symbol for a diode? (a) many long-short pairs (b) a circle with a cross (c) triangle against a bar (d) a line lifted at a gap
36. 36.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a push button (c) a tilt switch (d) a slide switch
37. 37.🔦 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 paper strip. Does the bulb glow? (a) Yes (b) No
38. 38.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) Yes (b) No
39. 39.🔦 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 rubber eraser. Does the bulb glow? (a) Yes (b) No
40. 40.Which of these is not safe? (a) fly a kite near wires (b) stay away from pylons (c) stop if a part gets hot (d) keep drinks far away

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