Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 627 · 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 of these is safe? (a) take cells out after use (b) touch a switch when wet (c) fly a kite near wires (d) climb an electric pole
2. 2.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) one for each bulb (d) none
3. 3.🔋 Does a bicycle dynamo give electricity or use electricity? (a) gives electricity (b) uses electricity
4. 4.💡 3 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. Does bulb 2 glow? (a) No (b) Yes
5. 5.💡 2 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
6. 6.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) a bigger voltage (c) no voltage (d) the same voltage
7. 7.What does a slide switch do? (a) closes when tipped over (b) slides side to side (c) springs back when let go (d) stays where you flip it
8. 8.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
9. 9.🔌 Most metals are good … (a) insulators (b) magnets only (c) batteries (d) conductors
10. 10.Which drawing is the symbol for an ammeter? (a) many long-short pairs (b) a circle with V inside (c) a straight line (d) a circle with A inside
11. 11.🔋 6 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
12. 12.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
13. 13.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) little stars (d) dotted circles
14. 14.True or false: to fly kites in open fields is not safe. (a) True (b) False
15. 15.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
16. 16.Which of these gives us electricity? (a) a generator (b) an air conditioner (c) a television (d) a refrigerator
17. 17.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) not joined (c) by Wi-Fi (d) in series
18. 18.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
19. 19.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
20. 20.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
21. 21.Which of these is safe? (a) climb an electric pole (b) touch a fallen wire (c) build with an adult near (d) throw cells in a fire
22. 22.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
23. 23.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
24. 24.Which of these is an insulator? (a) a steel coin (b) a glass marble (c) a brass key (d) aluminium foil
25. 25.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
26. 26.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
27. 27.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) when either is ON (c) never (d) only when both are OFF
28. 28.True or false: a reed switch works only while pressed. (a) False (b) True
29. 29.True or false: to touch a fallen wire is safe. (a) False (b) True
30. 30.🔦 A circuit has a used-up (dead) 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 band. Does the bulb glow? (a) No (b) Yes
31. 31.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
32. 32.Which of these uses electricity? (a) a bicycle dynamo (b) a solar panel (c) a battery (d) a television
33. 33.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
34. 34.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
35. 35.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe
36. 36.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a reed switch (c) a tilt switch (d) a slide switch
37. 37.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
38. 38.🔍 Which is the odd one out? (a) a wooden stick (b) a ceramic cup (c) a glass marble (d) a brass key
39. 39.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
40. 40.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity

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