Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 471 · 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.True or false: if the switch is ON, the circuit is closed and current flows. (a) True (b) False
2. 2.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a push button (c) a slide switch (d) a reed switch
3. 3.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
5. 5.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
6. 6.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a series circuit (c) an open circuit (d) a full circuit
7. 7.🔘 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
8. 8.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
9. 9.💡 In a series circuit, how many paths does the current have? (a) one (b) none (c) two (d) one for each bulb
10. 10.🔘 When a switch is ON, the circuit is … (a) open (b) cut (c) broken (d) closed
11. 11.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are ON (c) when either is ON (d) only when both are OFF
12. 12.🔋 How many 2 V cells must be joined in series to give 4 V?
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) No (b) Yes
14. 14.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) own switch for each bulb (d) a break stops every bulb
15. 15.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) to make bulbs dim (d) so all go off together
16. 16.True or false: a push button closes near a magnet. (a) True (b) False
17. 17.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
18. 18.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) symbols are heavier (d) to make it colourful
19. 19.🔦 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) No (b) Yes
20. 20.Which of these is not safe? (a) keep drinks far away (b) use small battery cells (c) stay away from pylons (d) open a phone charger
21. 21.Which of these uses electricity? (a) a bicycle dynamo (b) a cell (c) a television (d) a generator
22. 22.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
23. 23.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is ON. Does the bulb glow? (a) No (b) Yes
24. 24.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
25. 25.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
26. 26.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a smaller voltage (c) the same voltage (d) a bigger voltage
27. 27.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
28. 28.🔦 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 glass marble. Does the bulb glow? (a) No (b) Yes
29. 29.True or false: to fly kites in open fields is not safe. (a) True (b) False
30. 30.Which of these is a conductor? (a) a rubber band (b) a wooden stick (c) aluminium foil (d) a plastic straw
31. 31.🔍 Which is the odd one out? (a) fly a kite near wires (b) keep drinks far away (c) build with an adult near (d) stop if a part gets hot
32. 32.Which of these is not safe? (a) dry your hands first (b) use mains for a project (c) fly kites in open fields (d) build with an adult near
33. 33.Which of these means the circuit is closed? (a) the switch is ON (b) a wire has come loose (c) the bulb is unscrewed (d) the switch is OFF
34. 34.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) junction (b) motor (c) cell (d) ammeter
35. 35.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) one bulb out, all go out (d) each gets the full volts
36. 36.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) not joined (d) by Wi-Fi
37. 37.🔍 Which is the odd one out? (a) touch a switch when wet (b) use mains for a project (c) poke things in a socket (d) stop if a part gets hot
38. 38.🔘 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 ON and C is OFF. Does the bulb glow? (a) Yes (b) No
39. 39.💡 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?
40. 40.True or false: a siren mainly makes sound. (a) False (b) True

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids