Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 776 · 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: a plastic ruler is a conductor. (a) False (b) True
2. 2.Which of these uses electricity? (a) a computer (b) a cell (c) a generator (d) a solar panel
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
4. 4.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) not joined (d) by Wi-Fi
5. 5.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
6. 6.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
7. 7.Which of these mainly makes movement? (a) a siren (b) a torch (c) a tube light (d) a table fan
8. 8.🔋 How many 2 V cells must be joined in series to give 10 V?
9. 9.🔍 Which is the odd one out? (a) a ceiling fan (b) a doorbell (c) an exhaust fan (d) an electric toy car
10. 10.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) a break stops every bulb (d) one bulb out, all go out
11. 11.🔍 Which is the odd one out? (a) touch a switch when wet (b) throw cells in a fire (c) build with an adult near (d) use mains for a project
12. 12.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
13. 13.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
14. 14.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) each gets the full volts (d) a break stops every bulb
15. 15.⚠️ Which power source should children use for electronics projects? (a) a small battery pack (b) an inverter socket (c) a mains extension board (d) a wall socket
16. 16.🔍 Which is the odd one out? (a) a dry cork (b) a plastic ruler (c) a rubber band (d) an iron nail
17. 17.🔌 Most metals are good … (a) insulators (b) batteries (c) magnets only (d) conductors
18. 18.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) none (c) only one (d) both of them
19. 19.True or false: a toggle switch flips up or down. (a) False (b) True
20. 20.🔦 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
21. 21.🔁 What must there be for a current to flow? (a) a complete loop (b) one loose end (c) a plastic gap (d) a broken path
22. 22.True or false: a night lamp mainly gives out light. (a) True (b) False
23. 23.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
24. 24.💡 2 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?
25. 25.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
26. 26.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
27. 27.🔍 Which is the odd one out? (a) aluminium foil (b) a steel spoon (c) a metal paper clip (d) a woollen thread
28. 28.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
29. 29.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
30. 30.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) Yes (b) No
31. 31.⚡ What does a traffic signal mainly change electricity into? (a) heat (b) sound (c) light (d) movement
32. 32.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
33. 33.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a tilt switch (c) a reed switch (d) a push button
34. 34.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) a single current path (d) many paths for current
35. 35.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
36. 36.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) resistor (b) battery (c) bulb (d) motor
37. 37.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a fuse or MCB (c) a plug top (d) a long wire
38. 38.🔍 Which is the odd one out? (a) a toaster (b) a siren (c) an electric kettle (d) a water heater
39. 39.Which of these is safe? (a) fly a kite near wires (b) fly kites in open fields (c) throw cells in a fire (d) climb an electric pole
40. 40.True or false: to keep drinks far away is safe. (a) False (b) True

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