Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 667 · 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.Which of these mainly makes sound? (a) a tube light (b) a buzzer (c) an LED lamp (d) an electric iron
2. 2.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
3. 3.What does a toggle switch do? (a) closes when tipped over (b) flips up or down (c) closes near a magnet (d) works only while pressed
4. 4.Which of these is an insulator? (a) a graphite rod (b) a steel coin (c) a steel spoon (d) a rubber eraser
5. 5.Which of these is not safe? (a) fly kites in open fields (b) keep drinks far away (c) use small battery cells (d) touch a switch when wet
6. 6.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
7. 7.🔍 Which is the odd one out? (a) a copper wire (b) a metal paper clip (c) a rubber band (d) a safety pin
8. 8.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a tilt switch (c) a push button (d) a slide switch
9. 9.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) switch (c) capacitor (d) LED
10. 10.True or false: if the loop is complete, the circuit is open and no current flows. (a) True (b) False
11. 11.Which of these means the circuit is open? (a) the switch is ON (b) a cell is taken out (c) the loop is complete (d) all wires are joined
12. 12.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
13. 13.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
14. 14.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
15. 15.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
16. 16.True or false: a mixer grinder mainly makes movement. (a) False (b) True
17. 17.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) bulbs share the voltage (d) each gets the full volts
18. 18.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
19. 19.🔦 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) Yes (b) No
20. 20.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
21. 21.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
22. 22.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
23. 23.🔋 Does a wind turbine give electricity or use electricity? (a) uses electricity (b) gives electricity
24. 24.🔋 8 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)? =
25. 25.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
26. 26.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
27. 27.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
28. 28.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) movement energy (b) light energy (c) chemical energy (d) sound energy
29. 29.🔍 Which is the odd one out? (a) a torch (b) a night lamp (c) a street light (d) a water heater
30. 30.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) a break stops every bulb (d) many paths for current
31. 31.Which of these is safe? (a) open a phone charger (b) touch a fallen wire (c) fly a kite near wires (d) dry your hands first
32. 32.🔘 Which kind of switch springs back when let go? (a) a reed switch (b) a toggle switch (c) a push button (d) a tilt switch
33. 33.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
34. 34.Which drawing is the symbol for a diode? (a) two equal parallel lines (b) a straight line (c) triangle, bar and arrows (d) triangle against a bar
35. 35.Which of these mainly gives out light? (a) a traffic signal (b) an electric drill (c) a rice cooker (d) a buzzer
36. 36.⚠️ Which power source should children use for electronics projects? (a) a small battery pack (b) a mains extension board (c) a wall socket (d) an inverter socket
37. 37.Which of these is an insulator? (a) a plastic straw (b) a metal paper clip (c) a safety pin (d) an iron nail
38. 38.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
39. 39.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes

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