Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 320 · 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.🔦 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
2. 2.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are OFF (d) when both are ON
3. 3.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) each gets the full volts (d) a single current path
4. 4.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) an iron nail (c) a plastic ruler (d) a brass key
6. 6.True or false: if the switch is ON, the circuit is open and no current flows. (a) True (b) False
7. 7.🔋 What is a battery? (a) two or more cells joined (b) a kind of bulb (c) one single wire (d) a switch with a lid
8. 8.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
9. 9.True or false: to stop if a part gets hot is not safe. (a) False (b) True
10. 10.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
11. 11.🔦 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 glass marble. Does the bulb glow? (a) Yes (b) No
12. 12.Which drawing is the symbol for a cell? (a) two or more cell symbols (b) triangle, bar and arrows (c) two equal parallel lines (d) one tall, one short bar
13. 13.Which of these is a conductor? (a) a rubber eraser (b) a woollen thread (c) a paper strip (d) a brass key
14. 14.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) used in house wiring (d) a single current path
15. 15.True or false: a woollen thread is a conductor. (a) False (b) True
16. 16.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) so all go off together (d) to save copper only
17. 17.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 5 is taken out of its holder. How many bulbs glow?
18. 18.🔦 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
19. 19.True or false: to take cells out after use is not safe. (a) True (b) False
20. 20.💡 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. Bulbs 1 and 3 are taken out of their holders. How many bulbs glow?
21. 21.🔋 Does a water pump give electricity or use electricity? (a) uses electricity (b) gives electricity
22. 22.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
23. 23.True or false: a paper strip is a conductor. (a) True (b) False
24. 24.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
25. 25.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
26. 26.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) two (d) one
27. 27.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with a cross (c) a circle with an X in it (d) a circle with M inside
28. 28.True or false: an electric iron mainly gives out heat. (a) True (b) False
29. 29.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
30. 30.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) a break stops every bulb (d) each gets the full volts
31. 31.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
32. 32.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
33. 33.💡 4 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
34. 34.Which of these is not safe? (a) build with an adult near (b) keep drinks far away (c) throw cells in a fire (d) dry your hands first
35. 35.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) ammeter (b) battery (c) capacitor (d) motor
36. 36.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) No (b) Yes
37. 37.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
38. 38.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
39. 39.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
40. 40.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a reed switch (c) a toggle switch (d) a tilt switch

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