Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 73 · 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 of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) a break stops every bulb (d) used in house wiring
2. 2.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) wind energy (c) nuclear energy (d) sound energy
3. 3.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the steel shaft (d) the metal tip
4. 4.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
5. 5.Which drawing is the symbol for a bulb? (a) two equal parallel lines (b) a long and a short line (c) a small empty box (d) a circle with an X in it
6. 6.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
7. 7.True or false: to touch a fallen wire is not safe. (a) True (b) False
8. 8.⚡ What does a ceiling fan mainly change electricity into? (a) heat (b) sound (c) light (d) movement
9. 9.True or false: a graphite rod is an insulator. (a) True (b) False
10. 10.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
11. 11.Which of these is a conductor? (a) a ceramic cup (b) a brass key (c) a plastic straw (d) a cotton thread
12. 12.🔦 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) Yes (b) No
13. 13.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
14. 14.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
15. 15.🔍 Which is the odd one out? (a) a ceramic cup (b) a brass key (c) a cotton thread (d) a plastic ruler
16. 16.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a rubber band. Does the bulb glow? (a) Yes (b) No
17. 17.True or false: an electric toy car mainly gives out heat. (a) True (b) False
18. 18.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) a break stops every bulb (d) own switch for each bulb
19. 19.Which of these is a conductor? (a) a rubber eraser (b) a dry cork (c) a safety pin (d) a rubber band
20. 20.True or false: a ceiling fan mainly makes sound. (a) True (b) False
21. 21.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
22. 22.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) photons (c) electrons (d) water drops
23. 23.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) an electric kettle (b) a traffic signal (c) a rice cooker (d) an electric iron
25. 25.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
26. 26.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a buzzer (b) a doorbell (c) an electric kettle (d) a siren
28. 28.🔍 Which is the odd one out? (a) a toaster (b) a school bell (c) a loudspeaker (d) a siren
29. 29.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
30. 30.Which of these means the circuit is closed? (a) the loop is complete (b) a cell is taken out (c) the switch is OFF (d) the bulb is unscrewed
31. 31.🔋 How many 3 V cells must be joined in series to give 24 V?
32. 32.🔍 Which is the odd one out? (a) a dry cork (b) a copper wire (c) an iron nail (d) a safety pin
33. 33.Which of these uses electricity? (a) a power station (b) a washing machine (c) a generator (d) a solar panel
34. 34.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
35. 35.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a plastic straw. Does the bulb glow? (a) No (b) Yes
36. 36.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
37. 37.True or false: to fly kites in open fields is not safe. (a) False (b) True
38. 38.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
39. 39.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) it does not matter (c) only one (d) both of them
40. 40.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =

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