Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 452 · 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.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
2. 2.Which of these mainly gives out light? (a) an electric iron (b) a street light (c) an exhaust fan (d) a room heater
3. 3.🔌 Which metal is used for most electric wires at home? (a) copper (b) rubber (c) glass (d) plastic
4. 4.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
5. 5.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a slide switch (c) a push button (d) a reed switch
6. 6.True or false: a wooden stick is an insulator. (a) False (b) True
7. 7.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
8. 8.💡 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?
9. 9.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
10. 10.🔘 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 ON and B is ON. Does the bulb glow? (a) Yes (b) No
11. 11.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
12. 12.True or false: to poke things in a socket is not safe. (a) True (b) False
13. 13.💡 5 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 4 is taken out of its holder. How many bulbs glow?
14. 14.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a straight line (c) a long and a short line (d) many long-short pairs
15. 15.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
16. 16.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a push button (c) a tilt switch (d) a toggle switch
17. 17.True or false: a dry cork is a conductor. (a) True (b) False
18. 18.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
19. 19.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
20. 20.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
21. 21.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
22. 22.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
23. 23.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
24. 24.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) wait and watch (c) shout for an adult (d) pour water on them
25. 25.🔍 Which is the odd one out? (a) use a cable with cuts (b) open a phone charger (c) climb an electric pole (d) build with an adult near
26. 26.What does a push button do? (a) slides side to side (b) closes when tipped over (c) flips up or down (d) works only while pressed
27. 27.🔘 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 ON. Does the bulb glow? (a) Yes (b) No
28. 28.Which of these is safe? (a) poke things in a socket (b) touch a fallen wire (c) touch a switch when wet (d) build with an adult near
29. 29.🔍 Which is the odd one out? (a) a safety pin (b) a brass key (c) a plastic ruler (d) a copper wire
30. 30.Which of these uses electricity? (a) a solar panel (b) a refrigerator (c) a wind turbine (d) a battery
31. 31.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
32. 32.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
33. 33.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a long and a short line (c) a circle with a cross (d) two equal parallel lines
34. 34.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
35. 35.Which of these means the circuit is open? (a) all wires are joined (b) the loop is complete (c) the switch is ON (d) a wire is cut
36. 36.Which of these mainly gives out heat? (a) an electric iron (b) a tube light (c) a mixer grinder (d) an LED lamp
37. 37.Which drawing is the symbol for a switch? (a) a circle with an X in it (b) a small empty box (c) a line lifted at a gap (d) a circle with a cross
38. 38.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
39. 39.🔋 A 12 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) No (b) Yes

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