Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 77 · 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: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
2. 2.True or false: a tilt switch works only while pressed. (a) True (b) False
3. 3.What does a toggle switch do? (a) springs back when let go (b) works only while pressed (c) flips up or down (d) slides side to side
4. 4.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
5. 5.True or false: a cotton thread is an insulator. (a) False (b) True
6. 6.⚠️ Why must we never touch switches with wet hands? (a) it is just untidy (b) water carries current (c) water makes it cold (d) it spoils the paint
7. 7.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) Yes (b) No
8. 8.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
9. 9.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a push button
10. 10.🔍 Which is the odd one out? (a) climb an electric pole (b) use mains for a project (c) build with an adult near (d) use a cable with cuts
11. 11.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
12. 12.🔋 6 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.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
14. 14.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) the same voltage (d) a bigger voltage
15. 15.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
16. 16.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
17. 17.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) motor (b) switch (c) junction (d) battery
18. 18.True or false: a plastic ruler is an insulator. (a) True (b) False
19. 19.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
20. 20.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
21. 21.🔍 Which is the odd one out? (a) fly a kite near wires (b) throw cells in a fire (c) keep drinks far away (d) use a cable with cuts
22. 22.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
23. 23.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
24. 24.Which of these is safe? (a) keep drinks far away (b) poke things in a socket (c) use a cable with cuts (d) touch a fallen wire
25. 25.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is ON, B is OFF, C is ON and D is ON. Does the bulb glow? (a) No (b) Yes
26. 26.Which drawing is the symbol for a battery? (a) triangle, bar and arrows (b) a straight line (c) a small empty box (d) two or more cell symbols
27. 27.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) ammeter (b) battery (c) motor (d) junction
28. 28.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) bury them in soil (d) cut them open
29. 29.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) touch a fallen wire (b) fly a kite near wires (c) use a cable with cuts (d) fly kites in open fields
31. 31.🔍 Which is the odd one out? (a) stay away from pylons (b) use small battery cells (c) build with an adult near (d) climb an electric pole
32. 32.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
33. 33.🔘 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 ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
34. 34.⚡ A solar panel changes which kind of energy into electricity? (a) wind energy (b) sound energy (c) chemical energy (d) light energy
35. 35.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
36. 36.Which of these mainly gives out light? (a) a buzzer (b) a toaster (c) a ceiling fan (d) a torch
37. 37.🔘 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 OFF, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
38. 38.What does a push button do? (a) stays where you flip it (b) closes when tipped over (c) slides side to side (d) works only while pressed
39. 39.What does a tilt switch do? (a) closes near a magnet (b) springs back when let go (c) closes when tipped over (d) slides side to side
40. 40.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a younger child (c) a stranger online (d) a trusted adult

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