Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 819 · 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 drawing is the symbol for a wire? (a) triangle against a bar (b) a straight line (c) a circle with M inside (d) a circle with an X in it
2. 2.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
3. 3.🔋 How many 2 V cells must be joined in series to give 10 V?
4. 4.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
5. 5.🔦 A circuit has a new 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 graphite rod. Does the bulb glow? (a) Yes (b) No
6. 6.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
7. 7.🔘 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 OFF and C is ON. Does the bulb glow? (a) Yes (b) No
8. 8.Which of these is true of a parallel circuit? (a) used in house wiring (b) one bulb out, all go out (c) a single current path (d) a break stops every bulb
9. 9.True or false: many long-short pairs is the symbol for a voltmeter. (a) True (b) False
10. 10.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
11. 11.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
12. 12.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
14. 14.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
15. 15.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
16. 16.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
17. 17.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 1.5 V (d) 230 V
18. 18.True or false: a room heater mainly makes sound. (a) True (b) False
19. 19.True or false: a toggle switch slides side to side. (a) False (b) True
20. 20.Which of these is true of a series circuit? (a) a single current path (b) own switch for each bulb (c) one out, the rest glow (d) many paths for current
21. 21.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) voltmeter (b) resistor (c) LED (d) battery
22. 22.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 2 glow? (a) Yes (b) No
23. 23.Which of these is an insulator? (a) a ceramic cup (b) a brass key (c) a steel spoon (d) a steel coin
24. 24.🔍 Which is the odd one out? (a) a torch (b) a toaster (c) a tube light (d) a street light
25. 25.💡 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
26. 26.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
27. 27.Which of these gives us electricity? (a) a mobile phone (b) a washing machine (c) a refrigerator (d) a battery
28. 28.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
29. 29.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
30. 30.🔁 What do we call a circuit with a break in it? (a) a series circuit (b) an open circuit (c) a closed circuit (d) a full circuit
31. 31.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
32. 32.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) not joined (d) in series
33. 33.💡 In a series circuit, how many paths does the current have? (a) one (b) none (c) one for each bulb (d) two
34. 34.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) many paths for current (d) each gets the full volts
35. 35.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they explode (c) they get dimmer (d) they keep glowing
36. 36.🔋 What should you do with used-up cells? (a) bury them in soil (b) cut them open (c) give them for recycling (d) throw them in a fire
37. 37.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
38. 38.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
39. 39.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
40. 40.🔦 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

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