Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 95 · 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.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
2. 2.Which of these uses electricity? (a) a mobile phone (b) a power station (c) a battery (d) a generator
3. 3.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a steel spoon. Does the bulb glow? (a) Yes (b) No
4. 4.🔋 What should you do with used-up cells? (a) cut them open (b) bury them in soil (c) give them for recycling (d) throw them in a fire
5. 5.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
6. 6.True or false: a line lifted at a gap is the symbol for a cell. (a) False (b) True
7. 7.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) No (b) Yes
8. 8.🔋 3 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)? =
9. 9.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 230 V (c) 15 V (d) 1.5 V
10. 10.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
11. 11.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a push button
12. 12.💡 In a series circuit, how many paths does the current have? (a) one (b) one for each bulb (c) two (d) none
13. 13.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
14. 14.🔋 What is a battery? (a) two or more cells joined (b) a switch with a lid (c) a kind of bulb (d) one single wire
15. 15.🔌 Most metals are good … (a) batteries (b) conductors (c) insulators (d) magnets only
16. 16.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
17. 17.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) sound energy (b) light energy (c) movement energy (d) chemical energy
18. 18.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
19. 19.True or false: to fly kites in open fields is safe. (a) False (b) True
20. 20.Which of these is safe? (a) stop if a part gets hot (b) poke things in a socket (c) throw cells in a fire (d) use mains for a project
21. 21.💡 6 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. Does bulb 5 glow? (a) No (b) Yes
22. 22.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
23. 23.True or false: one tall, one short bar is the symbol for a bulb. (a) True (b) False
24. 24.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
25. 25.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) a wire has come loose (c) the loop is complete (d) the switch is OFF
26. 26.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
27. 27.🔘 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 ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
28. 28.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a toggle switch (c) a slide switch (d) a reed switch
29. 29.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a complete loop (d) a plastic gap
30. 30.⚡ A fan changes electrical energy mainly into which kind of energy? (a) light energy (b) sound energy (c) movement energy (d) chemical energy
31. 31.Which of these uses electricity? (a) a power station (b) a solar panel (c) a washing machine (d) a generator
32. 32.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
33. 33.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
34. 34.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a tilt switch (c) a reed switch (d) a push button
35. 35.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) battery (c) LED (d) voltmeter
36. 36.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) to save copper only (c) so all go off together (d) each gets full voltage
37. 37.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) by Wi-Fi (c) in parallel (d) in series
38. 38.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
39. 39.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
40. 40.🔦 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 an iron nail. Does the bulb glow? (a) No (b) Yes

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