Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 125 · 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.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
2. 2.🔋 What is a battery? (a) a kind of bulb (b) two or more cells joined (c) a switch with a lid (d) one single wire
3. 3.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
4. 4.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) Yes (b) No
5. 5.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
6. 6.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
7. 7.What does a slide switch do? (a) closes near a magnet (b) stays where you flip it (c) springs back when let go (d) slides side to side
8. 8.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
9. 9.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
10. 10.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
11. 11.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False
12. 12.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) many paths for current (d) a break stops every bulb
13. 13.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
14. 14.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
15. 15.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
16. 16.💡 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. All the bulbs are in place. How many bulbs glow?
17. 17.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
18. 18.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
19. 19.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a plug top (c) a fuse or MCB (d) a long wire
20. 20.✏️ In a circuit diagram, which part is drawn as a straight line? (a) LED (b) resistor (c) wire (d) junction
21. 21.Which of these is safe? (a) use a cable with cuts (b) climb an electric pole (c) open a phone charger (d) keep drinks far away
22. 22.Which of these uses electricity? (a) a wind turbine (b) a battery (c) a cell (d) a television
23. 23.🔍 Which is the odd one out? (a) a buzzer (b) a table fan (c) a loudspeaker (d) a siren
24. 24.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
25. 25.🔋 Does a generator give electricity or use electricity? (a) uses electricity (b) gives electricity
26. 26.🔍 Which is the odd one out? (a) a copper wire (b) a steel spoon (c) a brass key (d) a ceramic cup
27. 27.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the switch (c) the glass (d) the filament
28. 28.🔋 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)? =
29. 29.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
30. 30.🔘 When a switch is ON, the circuit is … (a) closed (b) open (c) broken (d) cut
31. 31.🔍 Which is the odd one out? (a) open a phone charger (b) poke things in a socket (c) build with an adult near (d) throw cells in a fire
32. 32.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
33. 33.🔦 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 paper strip. Does the bulb glow? (a) Yes (b) No
34. 34.True or false: to fly a kite near wires is safe. (a) False (b) True
35. 35.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
36. 36.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
37. 37.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
38. 38.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) Yes (b) No
39. 39.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a trusted adult (c) nobody (d) a younger child
40. 40.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor

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