Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 754 · 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.True or false: a push button stays where you flip it. (a) False (b) True
2. 2.💡 6 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
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) wavy lines (d) dotted circles
4. 4.🔘 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) No (b) Yes
5. 5.Which of these mainly makes movement? (a) a mixer grinder (b) a street light (c) an electric iron (d) an LED lamp
6. 6.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) no voltage (d) a smaller voltage
7. 7.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
8. 8.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
9. 9.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) not joined (d) in series
10. 10.Which of these gives us electricity? (a) a generator (b) a television (c) a computer (d) a water pump
11. 11.True or false: a slide switch stays where you flip it. (a) True (b) False
12. 12.⚡ What does an electric drill mainly change electricity into? (a) light (b) heat (c) sound (d) movement
13. 13.🔍 Which is the odd one out? (a) a wooden stick (b) an iron nail (c) aluminium foil (d) a steel coin
14. 14.Which of these is a conductor? (a) a rubber band (b) a glass marble (c) an iron nail (d) a wooden stick
15. 15.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
16. 16.Which of these is safe? (a) throw cells in a fire (b) poke things in a socket (c) touch a switch when wet (d) dry your hands first
17. 17.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
18. 18.⚡ What does a ceiling fan mainly change electricity into? (a) heat (b) sound (c) movement (d) light
19. 19.⚡ What does an electric toy car mainly change electricity into? (a) light (b) heat (c) sound (d) movement
20. 20.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
21. 21.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) photons (c) electrons (d) water drops
22. 22.True or false: a glass marble is an insulator. (a) True (b) False
23. 23.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
24. 24.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
25. 25.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) double the voltage (c) no voltage (d) the same voltage
26. 26.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
27. 27.💡 2 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. How many bulbs glow?
28. 28.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a plastic straw. Does the bulb glow? (a) Yes (b) No
29. 29.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a dot where wires meet (c) a long and a short line (d) a straight line
30. 30.🔦 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 ceramic cup. Does the bulb glow? (a) No (b) Yes
31. 31.🔋 5 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
32. 32.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
33. 33.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
34. 34.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) a break stops every bulb (d) one bulb out, all go out
35. 35.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
36. 36.Which of these is not safe? (a) stop if a part gets hot (b) stay away from pylons (c) build with an adult near (d) climb an electric pole
37. 37.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
38. 38.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
39. 39.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
40. 40.🔁 What must there be for a current to flow? (a) a broken path (b) one loose end (c) a plastic gap (d) a complete loop

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