Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 539 · 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.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
2. 2.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
3. 3.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) cell (b) resistor (c) junction (d) LED
4. 4.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
5. 5.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
6. 6.🔋 A 3 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
7. 7.Which of these is safe? (a) touch a fallen wire (b) stop if a part gets hot (c) use mains for a project (d) throw cells in a fire
8. 8.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
9. 9.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
10. 10.🔌 Most metals are good … (a) batteries (b) magnets only (c) conductors (d) insulators
11. 11.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
12. 12.Which of these uses electricity? (a) a water pump (b) a wind turbine (c) a battery (d) a generator
13. 13.💡 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. How many bulbs glow?
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 plastic straw. Does the bulb glow? (a) Yes (b) No
15. 15.True or false: a street light mainly gives out light. (a) False (b) True
16. 16.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) ammeter (b) motor (c) resistor (d) capacitor
17. 17.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a switch that is ON (c) a cell (d) a conductor
18. 18.True or false: a safety pin is an insulator. (a) False (b) True
19. 19.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) an open circuit (c) a full circuit (d) a series circuit
20. 20.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) battery (b) voltmeter (c) resistor (d) bulb
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) a rubber eraser (c) a metal paper clip (d) a steel spoon
22. 22.Which of these is a conductor? (a) a rubber band (b) a metal paper clip (c) a woollen thread (d) a ceramic cup
23. 23.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) chemical energy (c) wind energy (d) light energy
24. 24.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
25. 25.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
26. 26.True or false: if a wire has come loose, the circuit is closed and current flows. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a metal paper clip (b) a ceramic cup (c) an iron nail (d) a safety pin
28. 28.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a break stops every bulb (d) used in house wiring
29. 29.⚡ What does a table fan mainly change electricity into? (a) sound (b) movement (c) light (d) heat
30. 30.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
31. 31.🔋 5 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)? =
32. 32.🔘 When a switch is ON, the circuit is … (a) closed (b) broken (c) open (d) cut
33. 33.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) little stars (d) dotted circles
34. 34.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in series (d) in parallel
35. 35.Which drawing is the symbol for a switch? (a) a circle with an X in it (b) a circle with A inside (c) one tall, one short bar (d) a line lifted at a gap
36. 36.🔦 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 ceramic cup. Does the bulb glow? (a) No (b) Yes
37. 37.💡 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 5 are taken out of their holders. How many bulbs glow?
38. 38.🔦 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 glass marble. Does the bulb glow? (a) No (b) Yes
39. 39.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) a line lifted at a gap (c) a circle with A inside (d) two equal parallel lines
40. 40.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No

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