Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 967 · 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: to keep drinks far away is not safe. (a) False (b) True
2. 2.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
3. 3.⚡ What does a street light mainly change electricity into? (a) heat (b) light (c) sound (d) movement
4. 4.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
5. 5.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) not joined (c) by Wi-Fi (d) in parallel
6. 6.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a paper strip. Does the bulb glow? (a) Yes (b) No
7. 7.🔌 Which metal is used for most electric wires at home? (a) rubber (b) plastic (c) glass (d) copper
8. 8.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
9. 9.⚡ What does a loudspeaker mainly change electricity into? (a) sound (b) movement (c) light (d) heat
10. 10.🔍 Which is the odd one out? (a) throw cells in a fire (b) open a phone charger (c) use small battery cells (d) use mains for a project
11. 11.🔘 Which kind of switch closes near a magnet? (a) a tilt switch (b) a toggle switch (c) a reed switch (d) a slide switch
12. 12.True or false: to keep drinks far away is safe. (a) False (b) True
13. 13.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
14. 14.True or false: a buzzer mainly makes movement. (a) False (b) True
15. 15.Which of these mainly makes movement? (a) an electric kettle (b) a street light (c) an LED lamp (d) a table fan
16. 16.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) True (b) False
17. 17.Which of these is true of a series circuit? (a) bulbs share the voltage (b) own switch for each bulb (c) many paths for current (d) each gets the full volts
18. 18.🔍 Which is the odd one out? (a) an iron nail (b) a rubber band (c) a steel coin (d) aluminium foil
19. 19.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
20. 20.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) No (b) Yes
21. 21.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
22. 22.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) when both are OFF (c) when either is ON (d) never
23. 23.True or false: a mixer grinder mainly makes movement. (a) True (b) False
24. 24.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
25. 25.⚡ What does a siren mainly change electricity into? (a) heat (b) movement (c) sound (d) light
26. 26.🔘 Which kind of switch slides side to side? (a) a push button (b) a toggle switch (c) a reed switch (d) a slide switch
27. 27.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) a parallel circuit (c) a short circuit (d) an open circuit
28. 28.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
29. 29.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
30. 30.Which of these mainly gives out heat? (a) a traffic signal (b) a ceiling fan (c) an electric toy car (d) a toaster
31. 31.True or false: a push button springs back when let go. (a) False (b) True
32. 32.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
33. 33.🔦 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
34. 34.⚡ What does an electric iron mainly change electricity into? (a) sound (b) movement (c) light (d) heat
35. 35.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) wire (b) cell (c) diode (d) motor
36. 36.🔘 Which kind of switch works only while pressed? (a) a push button (b) a reed switch (c) a toggle switch (d) a tilt switch
37. 37.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
38. 38.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
39. 39.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) pour water on them (c) wait and watch (d) pull them by the hand
40. 40.🔋 What is a battery? (a) one single wire (b) two or more cells joined (c) a switch with a lid (d) a kind of bulb

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