Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 433 · 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.🔋 A 12 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
2. 2.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
3. 3.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
4. 4.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) light energy (d) wind energy
5. 5.🔘 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
6. 6.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
7. 7.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the steel shaft (c) the plastic handle (d) the metal tip
8. 8.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) an open circuit (c) a full circuit (d) a series circuit
9. 9.💡 A battery lights 3 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
10. 10.🔦 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 wooden stick. Does the bulb glow? (a) Yes (b) No
11. 11.🔋 Does a bicycle dynamo give electricity or use electricity? (a) gives electricity (b) uses electricity
12. 12.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
13. 13.Which of these is an insulator? (a) a plastic ruler (b) an iron nail (c) a steel spoon (d) a copper wire
14. 14.True or false: to take cells out after use is safe. (a) True (b) False
15. 15.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
16. 16.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) switch (b) cell (c) resistor (d) battery
17. 17.Which of these gives us electricity? (a) a mobile phone (b) a cell (c) a television (d) a washing machine
18. 18.Which of these is true of a series circuit? (a) a break stops every bulb (b) each gets the full volts (c) many paths for current (d) one out, the rest glow
19. 19.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
20. 20.Which of these is safe? (a) take cells out after use (b) poke things in a socket (c) touch a fallen wire (d) use a cable with cuts
21. 21.True or false: if the loop is complete, the circuit is open and no current flows. (a) False (b) True
22. 22.True or false: a dot where wires meet is the symbol for a wire. (a) True (b) False
23. 23.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
24. 24.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
25. 25.Which of these uses electricity? (a) a bicycle dynamo (b) a refrigerator (c) a battery (d) a cell
26. 26.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
27. 27.Which of these is an insulator? (a) a steel coin (b) a brass key (c) a graphite rod (d) a woollen thread
28. 28.Which of these is true of a series circuit? (a) each gets the full volts (b) used in house wiring (c) own switch for each bulb (d) bulbs share the voltage
29. 29.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one for each bulb (d) one
30. 30.True or false: a glass marble is a conductor. (a) False (b) True
31. 31.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) the longer line (d) both lines
32. 32.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) shout for an adult (c) wait and watch (d) pour water on them
33. 33.🔋 A 3 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
34. 34.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) one out, the rest glow
35. 35.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) battery (b) wire (c) ammeter (d) switch
36. 36.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
37. 37.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
38. 38.🔋 5 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
39. 39.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
40. 40.Which of these is not safe? (a) stay away from pylons (b) dry your hands first (c) keep drinks far away (d) use mains for a project

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