Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 351 · 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 is the odd one out? (a) keep drinks far away (b) fly kites in open fields (c) build with an adult near (d) climb an electric pole
2. 2.What does a toggle switch do? (a) slides side to side (b) works only while pressed (c) flips up or down (d) springs back when let go
3. 3.What does a push button do? (a) closes when tipped over (b) flips up or down (c) springs back when let go (d) stays where you flip it
4. 4.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) movement energy (b) sound energy (c) chemical energy (d) light energy
5. 5.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
6. 6.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
7. 7.🔍 Which is the odd one out? (a) fly kites in open fields (b) use mains for a project (c) use small battery cells (d) dry your hands first
8. 8.🔍 Which is the odd one out? (a) a siren (b) a street light (c) a doorbell (d) a buzzer
9. 9.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
10. 10.True or false: “a single current path” is true of a series circuit. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) aluminium foil (b) a brass key (c) a safety pin (d) a glass marble
12. 12.💡 3 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
13. 13.💡 3 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
14. 14.⚡ What does a siren mainly change electricity into? (a) heat (b) sound (c) movement (d) light
15. 15.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
16. 16.🔦 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) No (b) Yes
17. 17.Which drawing is the symbol for a bulb? (a) a circle with A inside (b) one tall, one short bar (c) a circle with an X in it (d) a dot where wires meet
18. 18.True or false: to stay away from pylons is safe. (a) False (b) True
19. 19.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) to make bulbs dim (d) each gets full voltage
20. 20.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
21. 21.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) none (c) one (d) two
22. 22.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) a circle with V inside (c) a line lifted at a gap (d) two equal parallel lines
23. 23.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) one loose end (d) a plastic gap
24. 24.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
25. 25.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
26. 26.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
27. 27.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) cell (c) capacitor (d) wire
28. 28.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) in series (d) not joined
29. 29.True or false: a water heater mainly gives out heat. (a) True (b) False
30. 30.Which of these mainly makes sound? (a) an electric drill (b) an electric iron (c) a water heater (d) a doorbell
31. 31.True or false: a push button springs back when let go. (a) True (b) False
32. 32.Which of these is safe? (a) touch a fallen wire (b) use a cable with cuts (c) poke things in a socket (d) stay away from pylons
33. 33.Which drawing is the symbol for a bulb? (a) a dot where wires meet (b) a long and a short line (c) a circle with a cross (d) a plain rectangle
34. 34.⚠️ Is it safe to touch a switch when wet? (a) safe (b) not safe
35. 35.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is ON, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
36. 36.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
37. 37.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
38. 38.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
39. 39.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) junction (b) ammeter (c) switch (d) LED
40. 40.Which of these means the circuit is closed? (a) a wire has come loose (b) the loop is complete (c) a cell is taken out (d) the bulb is unscrewed

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