Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 85 · 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 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
2. 2.🔍 Which is the odd one out? (a) an electric drill (b) a torch (c) a ceiling fan (d) an electric toy car
3. 3.Which of these uses electricity? (a) a generator (b) a wind turbine (c) a water pump (d) a cell
4. 4.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a smaller voltage (c) a bigger voltage (d) no voltage
5. 5.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
6. 6.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
7. 7.True or false: a tilt switch stays where you flip it. (a) True (b) False
8. 8.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) LED (b) wire (c) voltmeter (d) cell
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a graphite rod (d) a steel coin
10. 10.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) by Wi-Fi (c) in parallel (d) not joined
11. 11.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
12. 12.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
13. 13.Which of these is a conductor? (a) a plastic straw (b) a safety pin (c) a glass marble (d) a paper strip
14. 14.Which of these is an insulator? (a) an iron nail (b) a metal paper clip (c) a ceramic cup (d) a copper wire
15. 15.🔍 Which is the odd one out? (a) keep drinks far away (b) poke things in a socket (c) use small battery cells (d) stay away from pylons
16. 16.🔍 Which is the odd one out? (a) a ceramic cup (b) a metal paper clip (c) a glass marble (d) a wooden stick
17. 17.True or false: if all wires are joined, the circuit is open and no current flows. (a) False (b) True
18. 18.💡 5 identical bulbs are joined in series with a 20 V battery (ideal wires). How many volts does each bulb get? =
19. 19.🔍 Which is the odd one out? (a) a room heater (b) a water heater (c) an electric iron (d) a tube light
20. 20.True or false: to dry your hands first is safe. (a) False (b) True
21. 21.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
22. 22.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the switch (c) the glass (d) the filament
23. 23.Which of these is a conductor? (a) a plastic straw (b) a glass marble (c) a metal paper clip (d) a dry cork
24. 24.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
25. 25.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a dry cork (b) a steel spoon (c) a woollen thread (d) a ceramic cup
27. 27.🔘 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 ON and C is OFF. Does the bulb glow? (a) No (b) Yes
28. 28.🔋 What is a battery? (a) one single wire (b) a kind of bulb (c) a switch with a lid (d) two or more cells joined
29. 29.🔍 Which is the odd one out? (a) climb an electric pole (b) touch a fallen wire (c) take cells out after use (d) open a phone charger
30. 30.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) an electric toy car (b) a school bell (c) a doorbell (d) a siren
32. 32.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) voltmeter (b) resistor (c) diode (d) junction
33. 33.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a push button
34. 34.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
35. 35.🔍 Which is the odd one out? (a) dry your hands first (b) stay away from pylons (c) use a cable with cuts (d) use small battery cells
36. 36.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
37. 37.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) bulb (c) junction (d) resistor
38. 38.Which of these is an insulator? (a) a brass key (b) a woollen thread (c) a steel coin (d) a copper wire
39. 39.True or false: an electric kettle mainly gives out heat. (a) False (b) True
40. 40.Which of these is not safe? (a) use small battery cells (b) touch a fallen wire (c) take cells out after use (d) dry your hands first

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids