Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 463 · 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 circuit has a used-up (dead) 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
2. 2.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) switch (b) battery (c) bulb (d) junction
3. 3.Which of these uses electricity? (a) an air conditioner (b) a bicycle dynamo (c) a battery (d) a power station
4. 4.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
5. 5.True or false: a circle with V inside is the symbol for a diode. (a) True (b) False
6. 6.🔘 A bulb and a cell are joined through 4 switches on 4 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
7. 7.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
8. 8.Which of these mainly makes movement? (a) a rice cooker (b) an exhaust fan (c) a torch (d) an LED lamp
9. 9.🔦 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 ruler. Does the bulb glow? (a) No (b) Yes
10. 10.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
11. 11.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a toggle switch (c) a push button (d) a slide switch
12. 12.Which of these mainly gives out heat? (a) an electric toy car (b) an exhaust fan (c) an electric iron (d) a street light
13. 13.🔍 Which is the odd one out? (a) touch a fallen wire (b) open a phone charger (c) climb an electric pole (d) dry your hands first
14. 14.🔦 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 steel coin. Does the bulb glow? (a) Yes (b) No
15. 15.Which of these is an insulator? (a) a metal paper clip (b) a steel coin (c) an iron nail (d) a wooden stick
16. 16.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
17. 17.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
18. 18.Which of these is a conductor? (a) a woollen thread (b) a dry cork (c) an iron nail (d) a wooden stick
19. 19.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) no voltage (c) the same voltage (d) a smaller voltage
20. 20.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) wavy lines (d) straight lines
21. 21.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when both are ON (c) when either is ON (d) when both are OFF
22. 22.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
23. 23.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
24. 24.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
25. 25.🔍 Which is the odd one out? (a) stay away from pylons (b) touch a fallen wire (c) throw cells in a fire (d) touch a switch when wet
26. 26.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
27. 27.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
28. 28.Which drawing is the symbol for a junction? (a) a circle with an X in it (b) two or more cell symbols (c) a dot where wires meet (d) a long and a short line
29. 29.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) both of them (c) it does not matter (d) only one
30. 30.🔍 Which is the odd one out? (a) an electric iron (b) a rice cooker (c) an electric kettle (d) a street light
31. 31.True or false: a push button stays where you flip it. (a) False (b) True
32. 32.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a safe circuit (c) a parallel circuit (d) a short circuit
33. 33.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
34. 34.Which of these is an insulator? (a) a copper wire (b) a steel coin (c) an iron nail (d) a rubber eraser
35. 35.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
36. 36.True or false: a push button flips up or down. (a) True (b) False
37. 37.🔘 When a switch is ON, the circuit is … (a) open (b) broken (c) closed (d) cut
38. 38.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
39. 39.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) quick and clear for all (d) to hide the circuit
40. 40.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor

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