Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 532 · 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.🔍 Which is the odd one out? (a) a copper wire (b) a safety pin (c) an iron nail (d) a cotton thread
2. 2.🔦 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 copper wire. Does the bulb glow? (a) Yes (b) No
3. 3.True or false: a safety pin is a conductor. (a) True (b) False
4. 4.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
5. 5.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) water carries current (d) it spoils the paint
6. 6.What does a toggle switch do? (a) slides side to side (b) springs back when let go (c) closes when tipped over (d) flips up or down
7. 7.🔍 Which is the odd one out? (a) use mains for a project (b) take cells out after use (c) stop if a part gets hot (d) build with an adult near
8. 8.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) one for each bulb (d) none
9. 9.🔍 Which is the odd one out? (a) stop if a part gets hot (b) keep drinks far away (c) touch a fallen wire (d) use small battery cells
10. 10.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to make it colourful (d) to hide the circuit
11. 11.🔋 What is a battery? (a) a switch with a lid (b) two or more cells joined (c) a kind of bulb (d) one single wire
12. 12.💡 4 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
13. 13.True or false: to use a cable with cuts is safe. (a) False (b) True
14. 14.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
15. 15.Which of these is an insulator? (a) a paper strip (b) a copper wire (c) a metal paper clip (d) a steel coin
16. 16.Which of these is true of a series circuit? (a) a break stops every bulb (b) one out, the rest glow (c) many paths for current (d) used in house wiring
17. 17.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a graphite rod (b) a plastic ruler (c) a metal paper clip (d) a safety pin
19. 19.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
20. 20.Which of these is safe? (a) touch a switch when wet (b) use mains for a project (c) climb an electric pole (d) keep drinks far away
21. 21.Which of these is safe? (a) climb an electric pole (b) touch a fallen wire (c) stop if a part gets hot (d) fly a kite near wires
22. 22.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
23. 23.Which of these mainly makes movement? (a) a table fan (b) a doorbell (c) a traffic signal (d) a room heater
24. 24.💡 5 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. Does bulb 2 glow? (a) No (b) Yes
25. 25.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
26. 26.Which of these is a conductor? (a) a ceramic cup (b) a paper strip (c) a rubber band (d) a graphite rod
27. 27.⚡ What does a table fan mainly change electricity into? (a) sound (b) light (c) heat (d) movement
28. 28.What does a slide switch do? (a) flips up or down (b) closes near a magnet (c) works only while pressed (d) slides side to side
29. 29.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
30. 30.What does a toggle switch do? (a) works only while pressed (b) stays where you flip it (c) closes when tipped over (d) springs back when let go
31. 31.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) a magnet (c) electric current (d) sound
32. 32.Which of these is true of a parallel circuit? (a) a single current path (b) one out, the rest glow (c) bulbs share the voltage (d) one bulb out, all go out
33. 33.💡 6 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?
34. 34.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
35. 35.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
36. 36.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is a conductor (c) plastic makes current (d) plastic is an insulator
37. 37.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
38. 38.True or false: to build with an adult near is safe. (a) True (b) False
39. 39.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) wait and watch (c) pour water on them (d) shout for an adult

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