Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 102 · 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.🔘 Which kind of switch works only while pressed? (a) a tilt switch (b) a slide switch (c) a toggle switch (d) a push button
2. 2.True or false: a small empty box is the symbol for a diode. (a) True (b) False
3. 3.Which drawing is the symbol for a capacitor? (a) a circle with a cross (b) many long-short pairs (c) two equal parallel lines (d) triangle against a bar
4. 4.⚠️ Is it safe to touch a switch when wet? (a) safe (b) not safe
5. 5.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) the bulb is unscrewed (d) the loop is complete
6. 6.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
7. 7.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
8. 8.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
9. 9.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
10. 10.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
11. 11.Which of these means the circuit is closed? (a) a wire is cut (b) the switch is OFF (c) a wire has come loose (d) the switch is ON
12. 12.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
13. 13.Which of these is an insulator? (a) aluminium foil (b) a dry cork (c) a copper wire (d) a graphite rod
14. 14.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) an open circuit (c) a safe circuit (d) a short circuit
15. 15.Which of these is safe? (a) use a cable with cuts (b) touch a fallen wire (c) fly a kite near wires (d) stay away from pylons
16. 16.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
17. 17.True or false: to touch a fallen wire is safe. (a) False (b) True
18. 18.Which of these mainly makes movement? (a) an electric iron (b) a mixer grinder (c) an electric kettle (d) an LED lamp
19. 19.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
20. 20.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
21. 21.Which of these mainly makes sound? (a) a rice cooker (b) a buzzer (c) an electric toy car (d) a traffic signal
22. 22.💡 4 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 3 are taken out of their holders. How many bulbs glow?
23. 23.🔘 Which kind of switch springs back when let go? (a) a push button (b) a slide switch (c) a toggle switch (d) a reed switch
24. 24.⚠️ Who should be with you when you build a circuit? (a) a trusted adult (b) nobody (c) a younger child (d) a stranger online
25. 25.Which drawing is the symbol for a wire? (a) a long and a short line (b) triangle, bar and arrows (c) a straight line (d) a circle with a cross
26. 26.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) never (c) when either is ON (d) only when both are ON
27. 27.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
28. 28.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) a wire is cut (d) the loop is complete
29. 29.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a reed switch (c) a push button (d) a slide switch
30. 30.True or false: to take cells out after use is safe. (a) False (b) True
31. 31.Which drawing is the symbol for a voltmeter? (a) a circle with an X in it (b) a line lifted at a gap (c) a circle with V inside (d) many long-short pairs
32. 32.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
33. 33.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) used in house wiring (d) own switch for each bulb
34. 34.True or false: a rubber eraser is a conductor. (a) False (b) True
35. 35.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) by Wi-Fi (c) not joined (d) in parallel
36. 36.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
37. 37.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) rubber (d) plastic
38. 38.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
39. 39.⚡ What does an electric drill mainly change electricity into? (a) light (b) heat (c) movement (d) sound
40. 40.True or false: a water heater mainly makes movement. (a) True (b) False

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