Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 937 · 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.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one (d) one for each bulb
2. 2.🔋 6 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)? =
3. 3.True or false: to use small battery cells is not safe. (a) True (b) False
4. 4.True or false: two equal parallel lines is the symbol for an LED. (a) False (b) True
5. 5.🔋 2 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)? =
6. 6.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
7. 7.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) each gets the full volts (d) a single current path
8. 8.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) when either is ON (c) only when both are ON (d) only when both are OFF
9. 9.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) resistor (b) switch (c) battery (d) bulb
10. 10.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
11. 11.Which drawing is the symbol for a capacitor? (a) a plain rectangle (b) a dot where wires meet (c) two equal parallel lines (d) two or more cell symbols
12. 12.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
13. 13.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
14. 14.True or false: a slide switch closes near a magnet. (a) False (b) True
15. 15.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 0.5 V (d) 1.5 V
16. 16.True or false: to build with an adult near is not safe. (a) False (b) True
17. 17.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) all wires are joined (d) the switch is OFF
18. 18.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
19. 19.True or false: if the switch is OFF, the circuit is open and no current flows. (a) False (b) True
20. 20.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 2 glow? (a) Yes (b) No
21. 21.Which drawing is the symbol for a voltmeter? (a) one tall, one short bar (b) a straight line (c) a circle with V inside (d) a long and a short line
22. 22.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
23. 23.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) when both are OFF (c) never (d) when either is ON
24. 24.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a reed switch (d) a tilt switch
25. 25.Which of these mainly gives out heat? (a) a doorbell (b) a street light (c) a traffic signal (d) an electric kettle
26. 26.True or false: a rice cooker mainly makes sound. (a) False (b) True
27. 27.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
28. 28.🔘 Which kind of switch slides side to side? (a) a push button (b) a slide switch (c) a reed switch (d) a toggle switch
29. 29.💡 6 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?
30. 30.🔍 Which is the odd one out? (a) open a phone charger (b) stay away from pylons (c) touch a switch when wet (d) use mains for a project
31. 31.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
32. 32.Which of these mainly gives out light? (a) a street light (b) a toaster (c) a siren (d) a table fan
33. 33.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.What does a toggle switch do? (a) springs back when let go (b) slides side to side (c) closes near a magnet (d) stays where you flip it
35. 35.Which of these uses electricity? (a) a wind turbine (b) a television (c) a generator (d) a power station
36. 36.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) to save copper only (d) so all go off together
37. 37.What does a push button do? (a) slides side to side (b) works only while pressed (c) closes near a magnet (d) stays where you flip it
38. 38.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
39. 39.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) the same voltage (d) half the voltage
40. 40.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they explode (d) they get dimmer

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