Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 145 · 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.🔋 A 6 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
2. 2.True or false: a school bell mainly gives out light. (a) False (b) True
3. 3.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.💡 3 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
5. 5.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a small battery pack (d) a wall socket
6. 6.🔍 Which is the odd one out? (a) build with an adult near (b) stop if a part gets hot (c) touch a switch when wet (d) keep drinks far away
7. 7.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
8. 8.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
9. 9.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a tilt switch (c) a push button (d) a toggle switch
10. 10.Which of these is not safe? (a) build with an adult near (b) touch a switch when wet (c) stay away from pylons (d) stop if a part gets hot
11. 11.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
12. 12.Which of these is a conductor? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a wooden stick
13. 13.🔘 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
14. 14.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
15. 15.True or false: two or more cell symbols is the symbol for a cell. (a) True (b) False
16. 16.🔦 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 wooden stick. Does the bulb glow? (a) No (b) Yes
17. 17.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
18. 18.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) a line lifted at a gap (c) a circle with V inside (d) triangle, bar and arrows
19. 19.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) own switch for each bulb (d) a break stops every bulb
20. 20.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
21. 21.Which of these is an insulator? (a) a steel coin (b) a metal paper clip (c) an iron nail (d) a ceramic cup
22. 22.🔍 Which is the odd one out? (a) a street light (b) an LED lamp (c) a traffic signal (d) a water heater
23. 23.True or false: to throw cells in a fire is not safe. (a) True (b) False
24. 24.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
25. 25.⚡ What does a toaster mainly change electricity into? (a) movement (b) sound (c) heat (d) light
26. 26.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) sound (c) friction (d) a magnet
27. 27.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
28. 28.True or false: “a single current path” is true of a series circuit. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) wire (b) ammeter (c) resistor (d) switch
30. 30.True or false: a wooden stick is a conductor. (a) False (b) True
31. 31.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
32. 32.🔋 A 6 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
33. 33.🔦 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
34. 34.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
35. 35.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) cut (d) broken
36. 36.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when either is ON (c) when both are ON (d) when both are OFF
37. 37.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) by Wi-Fi (d) not joined
38. 38.True or false: a slide switch slides side to side. (a) True (b) False
39. 39.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) a wire has come loose (d) all wires are joined
40. 40.🔋 5 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =

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