Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 987 · 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.True or false: a school bell mainly gives out light. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) fly a kite near wires (b) use a cable with cuts (c) dry your hands first (d) touch a switch when wet
3. 3.Which of these is true of a parallel circuit? (a) used in house wiring (b) a single current path (c) bulbs share the voltage (d) one bulb out, all go out
4. 4.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
5. 5.🔁 What do we call a circuit with a break in it? (a) an open circuit (b) a series circuit (c) a full circuit (d) a closed circuit
6. 6.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
7. 7.Which of these is an insulator? (a) a metal paper clip (b) aluminium foil (c) a graphite rod (d) a cotton thread
8. 8.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) cell (c) bulb (d) resistor
9. 9.Which of these is not safe? (a) use mains for a project (b) stop if a part gets hot (c) dry your hands first (d) keep drinks far away
10. 10.Which of these uses electricity? (a) a battery (b) a cell (c) a power station (d) a washing machine
11. 11.True or false: to fly kites in open fields is safe. (a) False (b) True
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 aluminium foil. Does the bulb glow? (a) No (b) Yes
13. 13.Which of these gives us electricity? (a) a television (b) a washing machine (c) a computer (d) a generator
14. 14.True or false: to use small battery cells is not safe. (a) True (b) False
15. 15.🔦 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 cotton thread. Does the bulb glow? (a) Yes (b) No
16. 16.Which of these is an insulator? (a) a steel coin (b) an iron nail (c) a rubber eraser (d) a steel spoon
17. 17.True or false: to touch a fallen wire is safe. (a) True (b) False
18. 18.🔦 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) No (b) Yes
19. 19.🔍 Which is the odd one out? (a) a street light (b) a rice cooker (c) a water heater (d) a room heater
20. 20.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to hide the circuit (c) quick and clear for all (d) to make it colourful
21. 21.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) an insulator (c) a switch that is ON (d) a cell
22. 22.Which of these is true of a series circuit? (a) a single current path (b) each gets the full volts (c) used in house wiring (d) many paths for current
23. 23.Which of these is true of a series circuit? (a) one bulb out, all go out (b) each gets the full volts (c) many paths for current (d) own switch for each bulb
24. 24.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
25. 25.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. Does bulb 3 glow? (a) Yes (b) No
26. 26.💡 5 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 5 glow? (a) No (b) Yes
27. 27.True or false: one tall, one short bar is the symbol for an ammeter. (a) True (b) False
28. 28.True or false: to stop if a part gets hot is safe. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) resistor (c) battery (d) switch
30. 30.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
31. 31.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a trusted adult (c) nobody (d) a stranger online
32. 32.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
33. 33.True or false: a slide switch slides side to side. (a) True (b) False
34. 34.True or false: a toggle switch closes near a magnet. (a) True (b) False
35. 35.What does a push button do? (a) closes near a magnet (b) slides side to side (c) springs back when let go (d) stays where you flip it
36. 36.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a push button
37. 37.What does a tilt switch do? (a) closes near a magnet (b) stays where you flip it (c) slides side to side (d) closes when tipped over
38. 38.🔘 A bulb and a cell are joined through 2 switches on 2 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
39. 39.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) it does not matter (c) both of them (d) only one
40. 40.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) wind energy (c) nuclear energy (d) electrical energy

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