Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 405 · 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 safe? (a) fly a kite near wires (b) touch a switch when wet (c) stop if a part gets hot (d) use a cable with cuts
2. 2.🔋 A 9 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
3. 3.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
4. 4.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
5. 5.Which of these mainly gives out light? (a) a table fan (b) a torch (c) a school bell (d) a water heater
6. 6.True or false: to take cells out after use is not safe. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a loudspeaker (b) a traffic signal (c) a siren (d) a doorbell
8. 8.Which of these is safe? (a) use a cable with cuts (b) use mains for a project (c) stay away from pylons (d) throw cells in a fire
9. 9.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it spoils the paint (c) it is just untidy (d) water carries current
10. 10.💡 5 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?
11. 11.🔋 4 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)? =
12. 12.True or false: a push button closes when tipped over. (a) True (b) False
13. 13.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
14. 14.True or false: if a wire has come loose, the circuit is open and no current flows. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) keep drinks far away (b) use mains for a project (c) take cells out after use (d) use small battery cells
16. 16.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a push button
17. 17.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
18. 18.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) capacitor (c) junction (d) wire
19. 19.What does a slide switch do? (a) stays where you flip it (b) slides side to side (c) closes near a magnet (d) flips up or down
20. 20.What does a push button do? (a) slides side to side (b) closes near a magnet (c) stays where you flip it (d) works only while pressed
21. 21.Which of these mainly makes sound? (a) an LED lamp (b) an exhaust fan (c) a school bell (d) a room heater
22. 22.🔋 A 9 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
23. 23.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) triangle, bar and arrows (c) a circle with an X in it (d) a line lifted at a gap
24. 24.True or false: a mixer grinder mainly makes movement. (a) True (b) False
25. 25.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a younger child (c) a trusted adult (d) a stranger online
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) switch (b) battery (c) capacitor (d) voltmeter
27. 27.🔍 Which is the odd one out? (a) touch a fallen wire (b) stay away from pylons (c) poke things in a socket (d) throw cells in a fire
28. 28.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
29. 29.Which of these is true of a series circuit? (a) each gets the full volts (b) used in house wiring (c) a single current path (d) own switch for each bulb
30. 30.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) wavy lines (d) dotted circles
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) bulb (c) switch (d) wire
32. 32.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
33. 33.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
34. 34.⚡ What does a mixer grinder mainly change electricity into? (a) light (b) sound (c) movement (d) heat
35. 35.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are OFF (c) only when both are ON (d) when either is ON
36. 36.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
37. 37.Which of these means the circuit is open? (a) a wire is cut (b) all wires are joined (c) the loop is complete (d) the switch is ON
38. 38.Which of these is not safe? (a) poke things in a socket (b) take cells out after use (c) build with an adult near (d) fly kites in open fields
39. 39.⚡ What does a school bell mainly change electricity into? (a) light (b) sound (c) movement (d) heat
40. 40.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer

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