Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 76 · 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 paper strip is an insulator. (a) False (b) True
2. 2.What does a reed switch do? (a) slides side to side (b) springs back when let go (c) closes near a magnet (d) stays where you flip it
3. 3.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
4. 4.🔦 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
5. 5.Which of these mainly makes movement? (a) an electric kettle (b) a siren (c) an exhaust fan (d) a tube light
6. 6.🔁 What must there be for a current to flow? (a) a plastic gap (b) a broken path (c) a complete loop (d) one loose end
7. 7.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) to hide the circuit (d) symbols are heavier
8. 8.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
9. 9.What does a push button do? (a) flips up or down (b) closes when tipped over (c) stays where you flip it (d) works only while pressed
10. 10.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
11. 11.🔘 Which kind of switch works only while pressed? (a) a push button (b) a toggle switch (c) a slide switch (d) a tilt switch
12. 12.🔍 Which is the odd one out? (a) a safety pin (b) a glass marble (c) a plastic straw (d) a rubber eraser
13. 13.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
14. 14.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a slide switch
15. 15.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
16. 16.🔋 3 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
17. 17.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
18. 18.⚡ What does a school bell mainly change electricity into? (a) sound (b) heat (c) movement (d) light
19. 19.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
20. 20.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) bulb (c) ammeter (d) voltmeter
21. 21.Which of these mainly gives out light? (a) an electric toy car (b) a doorbell (c) an exhaust fan (d) a night lamp
22. 22.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
23. 23.Which of these is true of a series circuit? (a) many paths for current (b) a single current path (c) own switch for each bulb (d) each gets the full volts
24. 24.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) when either is ON (b) never (c) only when both are ON (d) only when both are OFF
25. 25.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
26. 26.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) a single current path (d) each gets the full volts
27. 27.Which of these uses electricity? (a) a mobile phone (b) a bicycle dynamo (c) a solar panel (d) a wind turbine
28. 28.True or false: to take cells out after use is safe. (a) False (b) True
29. 29.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) junction (b) ammeter (c) resistor (d) bulb
30. 30.True or false: an electric toy car mainly gives out heat. (a) False (b) True
31. 31.True or false: a dot where wires meet is the symbol for a diode. (a) True (b) False
32. 32.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
33. 33.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
34. 34.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
35. 35.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
36. 36.Which of these means the circuit is closed? (a) a wire has come loose (b) the loop is complete (c) the switch is OFF (d) the bulb is unscrewed
37. 37.🔦 A circuit has a used-up (dead) 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 cotton thread. Does the bulb glow? (a) Yes (b) No
38. 38.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) ammeter (b) junction (c) motor (d) cell
39. 39.Which of these mainly gives out heat? (a) a traffic signal (b) a ceiling fan (c) a table fan (d) a room heater
40. 40.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series

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