Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 467 · 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.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
2. 2.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) many paths for current (c) a break stops every bulb (d) a single current path
3. 3.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) friction (c) a magnet (d) electric current
4. 4.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
5. 5.🔁 What must there be for a current to flow? (a) a plastic gap (b) a complete loop (c) a broken path (d) one loose end
6. 6.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) switch (c) battery (d) cell
7. 7.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
8. 8.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
9. 9.Which of these is safe? (a) use mains for a project (b) take cells out after use (c) touch a fallen wire (d) touch a switch when wet
10. 10.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
11. 11.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
12. 12.Which of these is an insulator? (a) a dry cork (b) a metal paper clip (c) a copper wire (d) a steel spoon
13. 13.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
14. 14.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
15. 15.True or false: a cotton thread is a conductor. (a) False (b) True
16. 16.Which of these uses electricity? (a) a battery (b) a generator (c) a wind turbine (d) a television
17. 17.Which drawing is the symbol for a voltmeter? (a) one tall, one short bar (b) two or more cell symbols (c) a plain rectangle (d) a circle with V inside
18. 18.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a push button (c) a tilt switch (d) a toggle switch
19. 19.True or false: to build with an adult near is not safe. (a) False (b) True
20. 20.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
21. 21.What does a toggle switch do? (a) closes near a magnet (b) works only while pressed (c) flips up or down (d) slides side to side
22. 22.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
23. 23.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
24. 24.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles
25. 25.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when both are OFF (c) when both are ON (d) when either is ON
26. 26.True or false: a rice cooker mainly gives out heat. (a) True (b) False
27. 27.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) not joined (c) in series (d) by Wi-Fi
28. 28.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) a single current path (d) many paths for current
29. 29.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
30. 30.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
31. 31.🔘 What does a switch do in a circuit? (a) stores current (b) opens or closes the loop (c) changes the voltage (d) makes electricity
32. 32.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
33. 33.🔌 Most metals are good … (a) magnets only (b) conductors (c) insulators (d) batteries
34. 34.💡 5 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) No (b) Yes
35. 35.Which of these is not safe? (a) take cells out after use (b) stay away from pylons (c) keep drinks far away (d) touch a fallen wire
36. 36.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) motor (b) capacitor (c) battery (d) bulb
37. 37.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 9 V (c) 12 V (d) 1.5 V
38. 38.🔋 A 3 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
39. 39.🔍 Which is the odd one out? (a) a buzzer (b) a ceiling fan (c) a loudspeaker (d) a school bell
40. 40.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open

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