Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 374 · 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.True or false: to keep drinks far away is safe. (a) False (b) True
2. 2.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
3. 3.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) a short circuit (c) an open circuit (d) a parallel circuit
4. 4.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a tilt switch (c) a push button (d) a toggle switch
5. 5.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
6. 6.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pour water on them (d) pull them by the hand
7. 7.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) closed (d) broken
8. 8.🔋 Does a refrigerator give electricity or use electricity? (a) uses electricity (b) gives electricity
9. 9.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
10. 10.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
11. 11.True or false: a toggle switch flips up or down. (a) False (b) True
12. 12.🔋 2 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
13. 13.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) none (d) one for each bulb
14. 14.Which of these mainly gives out light? (a) a school bell (b) an exhaust fan (c) an electric kettle (d) a traffic signal
15. 15.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
16. 16.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
17. 17.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
18. 18.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
19. 19.Which of these is true of a series circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) many paths for current (d) used in house wiring
20. 20.🔋 6 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)? =
21. 21.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
22. 22.What does a toggle switch do? (a) slides side to side (b) closes when tipped over (c) flips up or down (d) closes near a magnet
23. 23.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
24. 24.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
25. 25.🔍 Which is the odd one out? (a) an exhaust fan (b) a table fan (c) a mixer grinder (d) a night lamp
26. 26.True or false: a copper wire is an insulator. (a) True (b) False
27. 27.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
29. 29.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) only when both are OFF (c) never (d) when either is ON
30. 30.🔍 Which is the odd one out? (a) use a cable with cuts (b) climb an electric pole (c) use small battery cells (d) poke things in a socket
31. 31.Which of these uses electricity? (a) a wind turbine (b) a refrigerator (c) a solar panel (d) a bicycle dynamo
32. 32.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 2 glow? (a) No (b) Yes
33. 33.Which drawing is the symbol for an ammeter? (a) a circle with a cross (b) a circle with A inside (c) one tall, one short bar (d) triangle, bar and arrows
34. 34.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
35. 35.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a paper strip (d) an iron nail
37. 37.Which drawing is the symbol for a diode? (a) a straight line (b) many long-short pairs (c) a dot where wires meet (d) triangle against a bar
38. 38.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) little stars (d) dotted circles
39. 39.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
40. 40.True or false: to touch a switch when wet is safe. (a) True (b) False

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