Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 99 · 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 ON. All the wires are firmly joined. A gap in one wire is bridged by a paper strip. Does the bulb glow? (a) No (b) Yes
2. 2.🔦 A circuit has a used-up (dead) 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 safety pin. Does the bulb glow? (a) Yes (b) No
3. 3.🔍 Which is the odd one out? (a) use small battery cells (b) touch a switch when wet (c) keep drinks far away (d) stay away from pylons
4. 4.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
5. 5.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
6. 6.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) sound energy (c) chemical energy (d) movement energy
7. 7.💡 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. How many bulbs glow?
8. 8.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a slide switch (c) a toggle switch (d) a push button
9. 9.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
11. 11.True or false: a slide switch stays where you flip it. (a) False (b) True
12. 12.Which of these mainly gives out light? (a) a rice cooker (b) an electric toy car (c) an electric kettle (d) a traffic signal
13. 13.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a push button (c) a slide switch (d) a reed switch
14. 14.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) bulb (c) switch (d) junction
15. 15.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
16. 16.🔋 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)? =
17. 17.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) neither line (d) the shorter line
18. 18.💡 3 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 3 glow? (a) Yes (b) No
19. 19.🔍 Which is the odd one out? (a) stay away from pylons (b) use a cable with cuts (c) fly a kite near wires (d) use mains for a project
20. 20.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
21. 21.True or false: a steel spoon is a conductor. (a) False (b) True
22. 22.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) junction (b) diode (c) motor (d) battery
23. 23.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) chemical energy (c) movement energy (d) light energy
24. 24.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
25. 25.🔍 Which is the odd one out? (a) a copper wire (b) a plastic straw (c) a glass marble (d) a paper strip
26. 26.True or false: a circle with a cross is the symbol for a switch. (a) True (b) False
27. 27.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) True (b) False
28. 28.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
29. 29.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
30. 30.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
31. 31.🔘 A bulb and a cell are joined through 2 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
32. 32.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) junction (c) voltmeter (d) bulb
33. 33.Which drawing is the symbol for a battery? (a) a circle with an X in it (b) two equal parallel lines (c) a line lifted at a gap (d) two or more cell symbols
34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) Yes (b) No
35. 35.🔍 Which is the odd one out? (a) a rice cooker (b) a room heater (c) a torch (d) an electric iron
36. 36.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) triangle, bar and arrows (c) one tall, one short bar (d) triangle against a bar
37. 37.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a push button (c) a toggle switch (d) a slide switch
38. 38.⚡ What does a loudspeaker mainly change electricity into? (a) heat (b) movement (c) sound (d) light
39. 39.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a younger child (c) a trusted adult (d) nobody
40. 40.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =

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