Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 137 · 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.What does a slide switch do? (a) works only while pressed (b) flips up or down (c) springs back when let go (d) slides side to side
2. 2.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) battery (b) resistor (c) capacitor (d) motor
3. 3.Which of these is not safe? (a) stay away from pylons (b) stop if a part gets hot (c) open a phone charger (d) dry your hands first
4. 4.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) Yes (b) No
5. 5.🔍 Which is the odd one out? (a) a water heater (b) a rice cooker (c) a toaster (d) an electric drill
6. 6.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) each gets the full volts (d) a break stops every bulb
7. 7.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
8. 8.True or false: to climb an electric pole is safe. (a) True (b) False
9. 9.True or false: a copper wire is an insulator. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) poke things in a socket (b) use small battery cells (c) take cells out after use (d) dry your hands first
11. 11.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a tilt switch (c) a push button (d) a reed switch
12. 12.🔦 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 metal paper clip. Does the bulb glow? (a) No (b) Yes
13. 13.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) when either is ON (c) only when both are OFF (d) only when both are ON
14. 14.🔦 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 steel spoon. Does the bulb glow? (a) No (b) Yes
15. 15.Which of these mainly makes movement? (a) a ceiling fan (b) a toaster (c) an LED lamp (d) an electric kettle
16. 16.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
17. 17.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) resistor (b) switch (c) bulb (d) voltmeter
19. 19.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
20. 20.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
21. 21.Which of these is not safe? (a) touch a fallen wire (b) keep drinks far away (c) dry your hands first (d) stay away from pylons
22. 22.⚡ What does an electric kettle mainly change electricity into? (a) sound (b) light (c) movement (d) heat
23. 23.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) diode (b) ammeter (c) battery (d) wire
24. 24.True or false: a metal paper clip is an insulator. (a) True (b) False
25. 25.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) no voltage (c) the same voltage (d) double the voltage
26. 26.True or false: a circle with M inside is the symbol for a junction. (a) True (b) False
27. 27.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one for each bulb (d) one
28. 28.🔦 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
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.Which drawing is the symbol for a battery? (a) a line lifted at a gap (b) a circle with V inside (c) triangle, bar and arrows (d) two or more cell symbols
31. 31.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
32. 32.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
33. 33.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
34. 34.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
35. 35.True or false: an LED lamp mainly gives out light. (a) True (b) False
36. 36.What does a toggle switch do? (a) slides side to side (b) stays where you flip it (c) springs back when let go (d) closes near a magnet
37. 37.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) one bulb out, all go out (d) many paths for current
38. 38.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a tilt switch
39. 39.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
40. 40.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False

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