Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 869 · 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) an electric iron (b) a street light (c) a traffic signal (d) an LED lamp
2. 2.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
3. 3.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
4. 4.🔘 A bulb and a cell are joined through 5 switches on 5 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
5. 5.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
6. 6.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
7. 7.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
8. 8.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) diode (b) switch (c) voltmeter (d) junction
9. 9.What does a slide switch do? (a) flips up or down (b) closes near a magnet (c) slides side to side (d) stays where you flip it
10. 10.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
11. 11.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) electrons (c) dust particles (d) water drops
12. 12.True or false: an electric iron mainly gives out heat. (a) True (b) False
13. 13.True or false: a circle with a cross is the symbol for a diode. (a) True (b) False
14. 14.True or false: to use a cable with cuts is not safe. (a) False (b) True
15. 15.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
16. 16.Which of these is safe? (a) climb an electric pole (b) use a cable with cuts (c) throw cells in a fire (d) build with an adult near
17. 17.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) glass (d) copper
18. 18.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a ceramic cup. Does the bulb glow? (a) No (b) Yes
19. 19.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) not joined (c) by Wi-Fi (d) in parallel
20. 20.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
21. 21.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) Yes (b) No
22. 22.True or false: a table fan mainly makes movement. (a) True (b) False
23. 23.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they all go out (d) they keep glowing
24. 24.💡 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
25. 25.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
26. 26.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a push button (c) a toggle switch (d) a reed switch
27. 27.True or false: to fly kites in open fields is not safe. (a) False (b) True
28. 28.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
30. 30.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a copper wire. Does the bulb glow? (a) Yes (b) No
31. 31.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
32. 32.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
33. 33.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
34. 34.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
35. 35.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to make it colourful (d) to hide the circuit
36. 36.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a slide switch
37. 37.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 5 is taken out of its holder. How many bulbs glow?
38. 38.⚡ What does a table fan mainly change electricity into? (a) heat (b) movement (c) sound (d) light
39. 39.Which of these is safe? (a) climb an electric pole (b) use a cable with cuts (c) stay away from pylons (d) poke things in a socket
40. 40.What does a toggle switch do? (a) springs back when let go (b) works only while pressed (c) stays where you flip it (d) closes when tipped over

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