Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 391 · 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.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) Yes (b) No
2. 2.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
3. 3.⚡ What does a tube light mainly change electricity into? (a) movement (b) light (c) heat (d) sound
4. 4.🔍 Which is the odd one out? (a) an electric drill (b) an electric toy car (c) an electric iron (d) a mixer grinder
5. 5.🔍 Which is the odd one out? (a) dry your hands first (b) fly a kite near wires (c) use small battery cells (d) take cells out after use
6. 6.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
7. 7.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) by Wi-Fi (d) in parallel
8. 8.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) nobody (c) a stranger online (d) a trusted adult
9. 9.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a toggle switch (c) a push button (d) a reed switch
10. 10.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
11. 11.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
12. 12.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) switch (c) resistor (d) wire
13. 13.True or false: to use a cable with cuts is not safe. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a siren (b) an electric iron (c) a toaster (d) a rice cooker
15. 15.🔘 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 OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
16. 16.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
17. 17.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) dust particles (d) photons
18. 18.What does a toggle switch do? (a) works only while pressed (b) stays where you flip it (c) springs back when let go (d) closes when tipped over
19. 19.True or false: to throw cells in a fire is safe. (a) False (b) True
20. 20.🔘 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 OFF. Does the bulb glow? (a) No (b) Yes
21. 21.True or false: to touch a fallen wire is not safe. (a) True (b) False
22. 22.💡 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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
23. 23.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) own switch for each bulb (d) a single current path
24. 24.💡 5 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. Does bulb 5 glow? (a) Yes (b) No
25. 25.Which of these is an insulator? (a) a dry cork (b) a brass key (c) a safety pin (d) a copper wire
26. 26.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
27. 27.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
28. 28.🔋 6 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
29. 29.🔦 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 a paper strip. Does the bulb glow? (a) Yes (b) No
30. 30.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) many paths for current (d) one bulb out, all go out
31. 31.True or false: a safety pin is an insulator. (a) True (b) False
32. 32.🔘 Which kind of switch closes near a magnet? (a) a tilt switch (b) a slide switch (c) a reed switch (d) a toggle switch
33. 33.🔦 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 brass key. Does the bulb glow? (a) Yes (b) No
34. 34.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
35. 35.Which of these is true of a parallel circuit? (a) used in house wiring (b) a break stops every bulb (c) bulbs share the voltage (d) one bulb out, all go out
36. 36.💡 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 1 and 2 are taken out of their holders. How many bulbs glow?
37. 37.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 0.5 V (c) 15 V (d) 1.5 V
38. 38.🔘 Which kind of switch springs back when let go? (a) a reed switch (b) a push button (c) a slide switch (d) a toggle switch
39. 39.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
40. 40.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No

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