Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 286 · 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 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)? =
2. 2.True or false: a push button closes when tipped over. (a) True (b) False
3. 3.🔘 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 ON. Does the bulb glow? (a) Yes (b) No
4. 4.🔍 Which is the odd one out? (a) throw cells in a fire (b) use a cable with cuts (c) fly a kite near wires (d) stay away from pylons
5. 5.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) each gets full voltage (d) to make bulbs dim
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they all go out (d) they explode
7. 7.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) junction (c) bulb (d) resistor
8. 8.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) the same voltage (d) half the voltage
9. 9.🔍 Which is the odd one out? (a) a metal paper clip (b) a rubber eraser (c) a graphite rod (d) aluminium foil
10. 10.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
11. 11.🔘 When a switch is ON, the circuit is … (a) cut (b) closed (c) broken (d) open
12. 12.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
13. 13.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
14. 14.True or false: a dot where wires meet is the symbol for a bulb. (a) True (b) False
15. 15.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
16. 16.🔍 Which is the odd one out? (a) use small battery cells (b) stay away from pylons (c) build with an adult near (d) use a cable with cuts
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) wire (b) resistor (c) capacitor (d) bulb
18. 18.True or false: an electric toy car mainly gives out light. (a) True (b) False
19. 19.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is OFF (c) the loop is complete (d) a wire has come loose
20. 20.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) ammeter (b) cell (c) bulb (d) LED
21. 21.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
22. 22.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the switch (c) the filament (d) the glass
23. 23.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a wall socket (d) a small battery pack
24. 24.Which of these is safe? (a) climb an electric pole (b) touch a switch when wet (c) use small battery cells (d) touch a fallen wire
25. 25.Which of these is an insulator? (a) a wooden stick (b) an iron nail (c) a safety pin (d) a metal paper clip
26. 26.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
27. 27.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 1.5 V (c) 230 V (d) 15 V
28. 28.Which of these is an insulator? (a) a copper wire (b) aluminium foil (c) a graphite rod (d) a glass marble
29. 29.🔋 A 9 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) an iron nail (c) a dry cork (d) a glass marble
31. 31.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) a smaller voltage (d) no voltage
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a rubber band (c) a cotton thread (d) a brass key
33. 33.Which of these is safe? (a) climb an electric pole (b) touch a switch when wet (c) open a phone charger (d) stay away from pylons
34. 34.🔌 Most metals are good … (a) magnets only (b) conductors (c) insulators (d) batteries
35. 35.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) an open circuit (d) a series circuit
36. 36.🔘 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 OFF and C is ON. Does the bulb glow? (a) Yes (b) No
37. 37.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) shout for an adult (c) pull them by the hand (d) pour water on them
38. 38.True or false: a dry cork is an insulator. (a) True (b) False
39. 39.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) voltmeter (b) cell (c) switch (d) ammeter

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