Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 431 · 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.What does a push button do? (a) closes near a magnet (b) closes when tipped over (c) stays where you flip it (d) works only while pressed
2. 2.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) half the voltage (d) the same voltage
3. 3.Which of these is not safe? (a) use small battery cells (b) fly kites in open fields (c) touch a fallen wire (d) stop if a part gets hot
4. 4.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) neither line (d) the shorter line
5. 5.True or false: a night lamp mainly gives out light. (a) False (b) True
6. 6.True or false: to open a phone charger is safe. (a) True (b) False
7. 7.What does a slide switch do? (a) flips up or down (b) springs back when let go (c) slides side to side (d) works only while pressed
8. 8.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are ON (d) when both are OFF
9. 9.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
10. 10.Which of these is safe? (a) fly kites in open fields (b) climb an electric pole (c) throw cells in a fire (d) open a phone charger
11. 11.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
12. 12.💡 5 identical bulbs are joined in series with a 7.5 V battery (ideal wires). How many volts does each bulb get? =
13. 13.Which of these is safe? (a) build with an adult near (b) poke things in a socket (c) touch a switch when wet (d) use mains for a project
14. 14.🔘 When a switch is ON, the circuit is … (a) cut (b) broken (c) open (d) closed
15. 15.🔋 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)? =
16. 16.⚡ What does a room heater mainly change electricity into? (a) heat (b) sound (c) movement (d) light
17. 17.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
18. 18.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
19. 19.True or false: to stop if a part gets hot is safe. (a) False (b) True
20. 20.Which of these means the circuit is closed? (a) a wire is cut (b) the bulb is unscrewed (c) a wire has come loose (d) the loop is complete
21. 21.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
22. 22.True or false: to touch a fallen wire is not safe. (a) True (b) False
23. 23.True or false: to take cells out after use is not safe. (a) False (b) True
24. 24.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) an open circuit (c) a parallel circuit (d) a short circuit
25. 25.🔋 Does a bicycle dynamo give electricity or use electricity? (a) gives electricity (b) uses electricity
26. 26.🔍 Which is the odd one out? (a) a wooden stick (b) a rubber eraser (c) a plastic ruler (d) a metal paper clip
27. 27.True or false: an iron nail is an insulator. (a) False (b) True
28. 28.True or false: a metal paper clip is an insulator. (a) True (b) False
29. 29.⚠️ 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
30. 30.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
31. 31.True or false: an electric drill mainly gives out light. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) climb an electric pole (b) touch a switch when wet (c) poke things in a socket (d) fly kites in open fields
33. 33.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
34. 34.🔍 Which is the odd one out? (a) use small battery cells (b) build with an adult near (c) fly kites in open fields (d) fly a kite near wires
35. 35.Which of these uses electricity? (a) a solar panel (b) a cell (c) a computer (d) a power station
36. 36.Which of these is not safe? (a) poke things in a socket (b) stay away from pylons (c) build with an adult near (d) use small battery cells
37. 37.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) No (b) Yes
38. 38.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
39. 39.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
40. 40.💡 3 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. Bulb 3 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No

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