Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 252 · 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: “many paths for current”? (a) series (b) parallel
2. 2.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
4. 4.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a push button (c) a reed switch (d) a tilt switch
5. 5.Which drawing is the symbol for an LED? (a) a line lifted at a gap (b) a circle with V inside (c) one tall, one short bar (d) triangle, bar and arrows
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they keep glowing (d) they all go out
7. 7.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
8. 8.True or false: one tall, one short bar is the symbol for a capacitor. (a) False (b) True
9. 9.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) when both are OFF (c) when either is ON (d) never
10. 10.🔘 When a switch is ON, the circuit is … (a) closed (b) open (c) broken (d) cut
11. 11.Which of these gives us electricity? (a) a computer (b) a television (c) an air conditioner (d) a power station
12. 12.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
13. 13.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
14. 14.True or false: one tall, one short bar is the symbol for a battery. (a) True (b) False
15. 15.True or false: a push button springs back when let go. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) stay away from pylons (b) dry your hands first (c) keep drinks far away (d) throw cells in a fire
17. 17.🔘 A bulb and a cell are joined through 5 switches on 5 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?
18. 18.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
19. 19.Which of these is a conductor? (a) a steel spoon (b) a woollen thread (c) a cotton thread (d) a glass marble
20. 20.💡 6 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 3 and 5 are taken out of their holders. How many bulbs glow?
21. 21.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) the same voltage (d) a smaller voltage
22. 22.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in series (c) in parallel (d) not joined
23. 23.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
24. 24.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
25. 25.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
26. 26.💡 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 2 is taken out of its holder. How many bulbs glow?
27. 27.🔋 What is a battery? (a) two or more cells joined (b) a kind of bulb (c) a switch with a lid (d) one single wire
28. 28.Which of these means the circuit is closed? (a) the loop is complete (b) the switch is OFF (c) a wire is cut (d) the bulb is unscrewed
29. 29.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) voltmeter (b) switch (c) cell (d) motor
30. 30.True or false: a metal paper clip is a conductor. (a) True (b) False
31. 31.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 9 V (c) 1.5 V (d) 12 V
32. 32.🔘 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 OFF and C is ON. Does the bulb glow? (a) Yes (b) No
33. 33.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) LED (b) ammeter (c) diode (d) motor
34. 34.Which of these uses electricity? (a) a bicycle dynamo (b) a power station (c) an air conditioner (d) a battery
35. 35.What does a push button do? (a) stays where you flip it (b) closes near a magnet (c) springs back when let go (d) flips up or down
36. 36.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic makes current (c) plastic is an insulator (d) plastic is a conductor
37. 37.True or false: a room heater mainly makes sound. (a) False (b) True
38. 38.True or false: to throw cells in a fire is safe. (a) False (b) True
39. 39.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
40. 40.Which of these gives us electricity? (a) a washing machine (b) an air conditioner (c) a computer (d) a cell

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