Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 921 · 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.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the switch (b) the base (c) the glass (d) the filament
2. 2.🔍 Which is the odd one out? (a) a metal paper clip (b) a steel spoon (c) a steel coin (d) a plastic ruler
3. 3.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
4. 4.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) both of them (c) only one (d) none
5. 5.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
6. 6.Which drawing is the symbol for a voltmeter? (a) a circle with an X in it (b) many long-short pairs (c) a circle with V inside (d) triangle, bar and arrows
7. 7.🔁 What must there be for a current to flow? (a) a broken path (b) a complete loop (c) one loose end (d) a plastic gap
8. 8.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
9. 9.True or false: one tall, one short bar is the symbol for a switch. (a) False (b) True
10. 10.Which drawing is the symbol for an ammeter? (a) a dot where wires meet (b) a circle with A inside (c) triangle, bar and arrows (d) two equal parallel lines
11. 11.💡 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?
12. 12.💡 6 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. How many bulbs glow?
13. 13.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
14. 14.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) Yes (b) No
15. 15.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 0.5 V (d) 1.5 V
16. 16.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
17. 17.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
18. 18.Which of these is a conductor? (a) a steel spoon (b) a paper strip (c) a wooden stick (d) a cotton thread
19. 19.True or false: many long-short pairs is the symbol for a capacitor. (a) False (b) True
20. 20.Which of these is a conductor? (a) a graphite rod (b) a wooden stick (c) a glass marble (d) a ceramic cup
21. 21.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) one single wire (d) two or more cells joined
22. 22.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
23. 23.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
24. 24.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
25. 25.True or false: if the loop is complete, the circuit is closed and current flows. (a) True (b) False
26. 26.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
27. 27.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
29. 29.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
30. 30.💡 4 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
31. 31.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) switch (c) motor (d) resistor
32. 32.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) so all go off together (d) each gets full voltage
33. 33.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) pour water on them (c) shout for an adult (d) pull them by the hand
34. 34.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
35. 35.Which drawing is the symbol for a wire? (a) a circle with a cross (b) a plain rectangle (c) two equal parallel lines (d) a straight line
36. 36.Which of these is true of a series circuit? (a) a break stops every bulb (b) many paths for current (c) own switch for each bulb (d) used in house wiring
37. 37.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a push button (c) a toggle switch (d) a slide switch
38. 38.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
39. 39.True or false: a circle with V inside is the symbol for a switch. (a) False (b) True
40. 40.True or false: if a wire is cut, the circuit is open and no current flows. (a) False (b) True

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