Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 25 · 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: “a break stops every bulb”? (a) parallel (b) series
2. 2.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
3. 3.⚡ What does an electric toy car mainly change electricity into? (a) heat (b) light (c) sound (d) movement
4. 4.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
5. 5.🔘 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 ON and C is OFF. Does the bulb glow? (a) No (b) Yes
6. 6.True or false: if a cell is taken out, the circuit is open and no current flows. (a) True (b) False
7. 7.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a long wire (b) a fuse or MCB (c) a plug top (d) a bulb
8. 8.🔌 Most metals are good … (a) batteries (b) magnets only (c) insulators (d) conductors
9. 9.🔍 Which is the odd one out? (a) fly a kite near wires (b) keep drinks far away (c) climb an electric pole (d) touch a switch when wet
10. 10.⚡ What does a water heater mainly change electricity into? (a) heat (b) movement (c) sound (d) light
11. 11.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
12. 12.What does a push button do? (a) closes when tipped over (b) works only while pressed (c) slides side to side (d) stays where you flip it
13. 13.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) resistor (b) LED (c) ammeter (d) voltmeter
14. 14.🔦 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
15. 15.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
16. 16.True or false: an exhaust fan mainly makes sound. (a) False (b) True
17. 17.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a torch (b) an LED lamp (c) a traffic signal (d) a school bell
19. 19.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
20. 20.⚡ What does a rice cooker mainly change electricity into? (a) movement (b) sound (c) light (d) heat
21. 21.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) resistor (b) LED (c) bulb (d) voltmeter
22. 22.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
23. 23.Which of these uses electricity? (a) a solar panel (b) a battery (c) an air conditioner (d) a bicycle dynamo
24. 24.🔦 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 copper wire. Does the bulb glow? (a) Yes (b) No
25. 25.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a stranger online (c) a trusted adult (d) nobody
26. 26.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to make bulbs dim (d) to save copper only
27. 27.Which of these is safe? (a) climb an electric pole (b) use small battery cells (c) use mains for a project (d) poke things in a socket
28. 28.Which of these mainly makes movement? (a) an LED lamp (b) a torch (c) an electric iron (d) an electric toy car
29. 29.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
30. 30.Which of these is not safe? (a) use a cable with cuts (b) use small battery cells (c) dry your hands first (d) keep drinks far away
31. 31.True or false: an electric drill mainly makes sound. (a) False (b) True
32. 32.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
33. 33.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) own switch for each bulb (d) one bulb out, all go out
34. 34.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
35. 35.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
36. 36.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
37. 37.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
38. 38.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
39. 39.True or false: an electric iron mainly makes sound. (a) False (b) True
40. 40.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) junction (b) bulb (c) LED (d) ammeter

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