Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 970 · 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: “used in house wiring” is true of a series circuit. (a) False (b) True
2. 2.Which of these mainly gives out light? (a) a room heater (b) an electric toy car (c) a doorbell (d) a tube light
3. 3.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. How many bulbs glow?
4. 4.True or false: a ceiling fan mainly makes movement. (a) False (b) True
5. 5.💡 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
6. 6.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
7. 7.🔦 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) Yes (b) No
8. 8.🔋 8 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)? =
9. 9.🔋 6 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
10. 10.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
11. 11.🔍 Which is the odd one out? (a) a woollen thread (b) a rubber band (c) a dry cork (d) a safety pin
12. 12.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) plastic (d) copper
13. 13.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
14. 14.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
15. 15.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) an insulator (d) a switch that is ON
16. 16.Which of these gives us electricity? (a) a water pump (b) an air conditioner (c) a battery (d) a television
17. 17.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) a single current path (d) used in house wiring
18. 18.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) Yes (b) No
19. 19.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) ammeter (b) switch (c) LED (d) motor
20. 20.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
21. 21.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a circle with A inside (c) a line lifted at a gap (d) a plain rectangle
22. 22.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
23. 23.Which of these gives us electricity? (a) a television (b) a generator (c) a refrigerator (d) a computer
24. 24.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
25. 25.Which of these uses electricity? (a) a mobile phone (b) a solar panel (c) a bicycle dynamo (d) a wind turbine
26. 26.Which of these mainly gives out light? (a) an LED lamp (b) a ceiling fan (c) a buzzer (d) a toaster
27. 27.True or false: a slide switch stays where you flip it. (a) False (b) True
28. 28.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) battery (c) diode (d) junction
29. 29.🔘 A bulb and a cell are joined through 2 switches on 2 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?
30. 30.True or false: to climb an electric pole is safe. (a) True (b) False
31. 31.💡 5 identical bulbs are joined in series with a 12.5 V battery (ideal wires). How many volts does each bulb get? =
32. 32.🔋 Does a bicycle dynamo give electricity or use electricity? (a) gives electricity (b) uses electricity
33. 33.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a street light (b) a torch (c) a night lamp (d) an electric drill
35. 35.True or false: to open a phone charger is not safe. (a) True (b) False
36. 36.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
37. 37.🔘 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 ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
38. 38.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) to make it colourful (d) symbols are heavier
39. 39.🔘 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 ON. Does the bulb glow? (a) Yes (b) No
40. 40.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes

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