Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 316 · 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.💡 3 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 2 is taken out of its holder. How many bulbs glow?
2. 2.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) bulb (b) battery (c) cell (d) resistor
3. 3.Which of these uses electricity? (a) a computer (b) a wind turbine (c) a generator (d) a solar panel
4. 4.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
5. 5.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
6. 6.True or false: a circle with M inside is the symbol for a junction. (a) False (b) True
7. 7.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) each gets the full volts (c) a single current path (d) one bulb out, all go out
8. 8.True or false: a woollen thread is a conductor. (a) True (b) False
9. 9.🔦 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 rubber band. Does the bulb glow? (a) No (b) Yes
10. 10.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
11. 11.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
12. 12.Which of these uses electricity? (a) a cell (b) a battery (c) a refrigerator (d) a solar panel
13. 13.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
14. 14.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) pour water on them (c) shout for an adult (d) wait and watch
15. 15.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) sound energy (d) light energy
16. 16.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
17. 17.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a trusted adult (d) a younger child
18. 18.🔍 Which is the odd one out? (a) an iron nail (b) a rubber band (c) aluminium foil (d) a brass key
19. 19.💡 A battery lights 2 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
20. 20.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
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 glass marble. Does the bulb glow? (a) No (b) Yes
22. 22.🔍 Which is the odd one out? (a) a doorbell (b) a school bell (c) a loudspeaker (d) an electric drill
23. 23.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) plastic (d) rubber
24. 24.Which drawing is the symbol for a switch? (a) two equal parallel lines (b) a circle with M inside (c) a line lifted at a gap (d) triangle against a bar
25. 25.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) triangle against a bar (c) one tall, one short bar (d) a dot where wires meet
26. 26.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
27. 27.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
28. 28.🔋 6 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)? =
29. 29.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) nuclear energy (c) wind energy (d) electrical energy
30. 30.True or false: a toaster mainly gives out light. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a loudspeaker (b) a siren (c) a table fan (d) a doorbell
32. 32.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
33. 33.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) each gets the full volts (d) bulbs share the voltage
34. 34.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) half the voltage (c) double the voltage (d) no voltage
35. 35.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) open (b) closed
36. 36.Which drawing is the symbol for an LED? (a) two or more cell symbols (b) triangle, bar and arrows (c) a long and a short line (d) a circle with a cross
37. 37.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) water drops (c) photons (d) electrons
38. 38.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) the loop is complete (d) a wire has come loose
39. 39.True or false: a tilt switch works only while pressed. (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. A gap in one wire is bridged by a graphite rod. Does the bulb glow? (a) No (b) Yes

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