Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 214 · 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.💡 3 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 2 glow? (a) No (b) Yes
2. 2.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
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.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) little stars (d) wavy lines
6. 6.🔍 Which is the odd one out? (a) a siren (b) a doorbell (c) a loudspeaker (d) an electric drill
7. 7.🔍 Which is the odd one out? (a) stop if a part gets hot (b) build with an adult near (c) fly a kite near wires (d) use small battery cells
8. 8.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
9. 9.True or false: a toggle switch flips up or down. (a) False (b) True
10. 10.What does a slide switch do? (a) stays where you flip it (b) works only while pressed (c) slides side to side (d) springs back when let go
11. 11.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
12. 12.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) own switch for each bulb (d) a single current path
13. 13.Which of these is not safe? (a) dry your hands first (b) fly a kite near wires (c) stop if a part gets hot (d) build with an adult near
14. 14.🔍 Which is the odd one out? (a) touch a switch when wet (b) fly kites in open fields (c) throw cells in a fire (d) use mains for a project
15. 15.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
16. 16.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
17. 17.Which of these is true of a series circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) many paths for current (d) own switch for each bulb
18. 18.🔘 A bulb and a cell are joined through 3 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
19. 19.Which of these is safe? (a) climb an electric pole (b) touch a fallen wire (c) take cells out after use (d) open a phone charger
20. 20.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
21. 21.True or false: a circle with A inside is the symbol for a switch. (a) False (b) True
22. 22.🔘 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 ON and C is OFF. Does the bulb glow? (a) Yes (b) No
23. 23.⚡ What does an exhaust fan mainly change electricity into? (a) sound (b) movement (c) heat (d) light
24. 24.True or false: a plastic ruler is a conductor. (a) False (b) True
25. 25.True or false: a small empty box is the symbol for a capacitor. (a) True (b) False
26. 26.True or false: an electric iron mainly gives out light. (a) True (b) False
27. 27.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
28. 28.⚡ What does a rice cooker mainly change electricity into? (a) light (b) heat (c) sound (d) movement
29. 29.🔋 What is a battery? (a) two or more cells joined (b) one single wire (c) a kind of bulb (d) a switch with a lid
30. 30.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
31. 31.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
32. 32.True or false: a doorbell mainly makes sound. (a) True (b) False
33. 33.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the glass (b) the switch (c) the filament (d) the base
34. 34.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) resistor (b) voltmeter (c) battery (d) motor
35. 35.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
36. 36.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) each gets full voltage (d) to make bulbs dim
37. 37.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they all go out (d) they explode
38. 38.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) never (c) when either is ON (d) when both are OFF
39. 39.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) movement energy (b) sound energy (c) light energy (d) chemical energy
40. 40.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False

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