Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 586 · 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.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
2. 2.💡 2 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. Bulb 1 is taken out of its holder. How many bulbs glow?
3. 3.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a push button (c) a tilt switch (d) a slide switch
4. 4.True or false: a rice cooker mainly makes movement. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) stay away from pylons (b) build with an adult near (c) climb an electric pole (d) fly kites in open fields
6. 6.Which of these is true of a series circuit? (a) each gets the full volts (b) used in house wiring (c) one bulb out, all go out (d) own switch for each bulb
7. 7.Which of these is true of a parallel circuit? (a) used in house wiring (b) one bulb out, all go out (c) a break stops every bulb (d) bulbs share the voltage
8. 8.⚡ What does an electric kettle mainly change electricity into? (a) light (b) movement (c) sound (d) heat
9. 9.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) No (b) Yes
10. 10.Which of these uses electricity? (a) a generator (b) a cell (c) a washing machine (d) a power station
11. 11.🔘 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?
12. 12.True or false: a ceiling fan mainly makes sound. (a) False (b) True
13. 13.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
14. 14.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
15. 15.Which of these mainly gives out light? (a) an LED lamp (b) a siren (c) an exhaust fan (d) an electric drill
16. 16.Which drawing is the symbol for a wire? (a) one tall, one short bar (b) two equal parallel lines (c) a circle with a cross (d) a straight line
17. 17.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) wire (b) ammeter (c) battery (d) switch
18. 18.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
19. 19.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a toggle switch (c) a reed switch (d) a push button
20. 20.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
21. 21.🔍 Which is the odd one out? (a) fly kites in open fields (b) fly a kite near wires (c) keep drinks far away (d) use small battery cells
22. 22.🔋 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)? =
23. 23.Which of these is an insulator? (a) aluminium foil (b) a paper strip (c) a brass key (d) a metal paper clip
24. 24.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) none (d) one
25. 25.🔦 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 cotton thread. Does the bulb glow? (a) Yes (b) No
26. 26.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
27. 27.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
28. 28.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.True or false: a rice cooker mainly gives out heat. (a) True (b) False
30. 30.🔌 Most metals are good … (a) batteries (b) insulators (c) conductors (d) magnets only
31. 31.What does a push button do? (a) springs back when let go (b) stays where you flip it (c) slides side to side (d) closes near a magnet
32. 32.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
34. 34.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
35. 35.🔦 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 plastic straw. Does the bulb glow? (a) Yes (b) No
36. 36.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
37. 37.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) two or more cell symbols (c) a circle with a cross (d) a circle with V inside
38. 38.Which of these is a conductor? (a) a plastic ruler (b) a wooden stick (c) a steel spoon (d) a woollen thread
39. 39.Which of these gives us electricity? (a) a washing machine (b) a cell (c) a computer (d) a television
40. 40.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =

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