Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 579 · 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 circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a rubber eraser. Does the bulb glow? (a) Yes (b) No
2. 2.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) two or more cells joined (d) one single wire
3. 3.Which drawing is the symbol for a motor? (a) a circle with M inside (b) triangle against a bar (c) a straight line (d) a circle with a cross
4. 4.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) half the voltage (d) the same voltage
5. 5.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a push button
6. 6.🔋 How many 2 V cells must be joined in series to give 6 V?
7. 7.Which of these is an insulator? (a) a steel coin (b) a rubber band (c) an iron nail (d) a steel spoon
8. 8.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
9. 9.🔌 Most metals are good … (a) insulators (b) batteries (c) magnets only (d) conductors
10. 10.🔦 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) Yes (b) No
11. 11.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
12. 12.💡 In a series circuit, how many paths does the current have? (a) one (b) one for each bulb (c) two (d) none
13. 13.🔍 Which is the odd one out? (a) a plastic straw (b) aluminium foil (c) a dry cork (d) a plastic ruler
14. 14.Which of these is safe? (a) use a cable with cuts (b) fly kites in open fields (c) touch a fallen wire (d) use mains for a project
15. 15.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) capacitor (b) motor (c) LED (d) voltmeter
17. 17.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
18. 18.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the switch (b) the filament (c) the base (d) the glass
19. 19.Which of these means the circuit is open? (a) the loop is complete (b) all wires are joined (c) a wire is cut (d) the switch is ON
20. 20.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
21. 21.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
22. 22.True or false: two or more cell symbols is the symbol for a resistor. (a) True (b) False
23. 23.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
24. 24.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
25. 25.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) when either is ON (b) never (c) only when both are OFF (d) only when both are ON
26. 26.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
27. 27.Which of these mainly makes sound? (a) a water heater (b) a table fan (c) a night lamp (d) a buzzer
28. 28.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
29. 29.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
30. 30.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
31. 31.🔍 Which is the odd one out? (a) stay away from pylons (b) use mains for a project (c) open a phone charger (d) fly a kite near wires
32. 32.Which drawing is the symbol for a battery? (a) one tall, one short bar (b) a plain rectangle (c) many long-short pairs (d) a circle with M inside
33. 33.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
34. 34.💡 3 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
35. 35.Which of these uses electricity? (a) a solar panel (b) a battery (c) a computer (d) a wind turbine
36. 36.Which of these means the circuit is open? (a) the switch is ON (b) a cell is taken out (c) all wires are joined (d) the loop is complete
37. 37.Which of these uses electricity? (a) an air conditioner (b) a wind turbine (c) a bicycle dynamo (d) a solar panel
38. 38.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
39. 39.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) straight lines (d) little stars
40. 40.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids