Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 775 · 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 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
2. 2.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
3. 3.True or false: an electric toy car mainly makes movement. (a) True (b) False
4. 4.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) capacitor (b) switch (c) cell (d) ammeter
5. 5.💡 6 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 2 and 6 are taken out of their holders. Does bulb 3 glow? (a) No (b) Yes
6. 6.True or false: to keep drinks far away is not safe. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a woollen thread (b) a ceramic cup (c) a brass key (d) a cotton thread
8. 8.True or false: to keep drinks far away is safe. (a) False (b) True
9. 9.🔋 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)? =
10. 10.Which of these is not safe? (a) fly kites in open fields (b) stay away from pylons (c) dry your hands first (d) climb an electric pole
11. 11.🔋 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)? =
12. 12.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
13. 13.Which of these is safe? (a) fly a kite near wires (b) poke things in a socket (c) use a cable with cuts (d) take cells out after use
14. 14.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) each gets the full volts (d) a single current path
15. 15.Which of these is safe? (a) throw cells in a fire (b) stop if a part gets hot (c) use mains for a project (d) open a phone charger
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) capacitor (b) ammeter (c) resistor (d) bulb
17. 17.💡 2 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
18. 18.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
19. 19.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
20. 20.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a conductor (c) an insulator (d) a cell
21. 21.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
22. 22.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to hide the circuit (c) symbols are heavier (d) to make it colourful
23. 23.🔋 5 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
24. 24.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
25. 25.Which of these uses electricity? (a) a bicycle dynamo (b) a power station (c) a wind turbine (d) a refrigerator
26. 26.⚡ What does an electric kettle mainly change electricity into? (a) movement (b) light (c) sound (d) heat
27. 27.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) light energy (d) sound energy
28. 28.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
29. 29.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: a mixer grinder mainly makes movement. (a) True (b) False
31. 31.True or false: a brass key is an insulator. (a) False (b) True
32. 32.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
33. 33.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) broken (d) cut
34. 34.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the longer line (c) the shorter line (d) both lines
35. 35.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
36. 36.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
37. 37.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) bulb (b) diode (c) resistor (d) junction
38. 38.True or false: if a cell is taken out, the circuit is open and no current flows. (a) True (b) False
39. 39.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
40. 40.True or false: “a single current path” is true of a series circuit. (a) True (b) False

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