Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 960 · 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.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
2. 2.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a series circuit (c) a closed circuit (d) an open circuit
3. 3.🔍 Which is the odd one out? (a) a dry cork (b) a wooden stick (c) a plastic ruler (d) a safety pin
4. 4.Which of these mainly makes sound? (a) a doorbell (b) an electric kettle (c) a water heater (d) an electric toy car
5. 5.⚡ What does a traffic signal mainly change electricity into? (a) heat (b) light (c) sound (d) movement
6. 6.🔍 Which is the odd one out? (a) take cells out after use (b) poke things in a socket (c) build with an adult near (d) use small battery cells
7. 7.🔦 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
8. 8.Which of these is safe? (a) open a phone charger (b) build with an adult near (c) use mains for a project (d) poke things in a socket
9. 9.True or false: a graphite rod is an insulator. (a) False (b) True
10. 10.⚠️ Which power source should children use for electronics projects? (a) an inverter socket (b) a mains extension board (c) a small battery pack (d) a wall socket
11. 11.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) Yes (b) No
12. 12.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
13. 13.🔦 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 glass marble. Does the bulb glow? (a) Yes (b) No
14. 14.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
15. 15.🔘 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?
16. 16.🔋 How many 1.5 V cells must be joined in series to give 9 V?
17. 17.Which of these mainly makes sound? (a) a table fan (b) a school bell (c) a water heater (d) a mixer grinder
18. 18.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
19. 19.🔦 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
20. 20.True or false: if the switch is OFF, the circuit is closed and current flows. (a) True (b) False
21. 21.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) LED (b) bulb (c) battery (d) wire
22. 22.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) shout for an adult (c) wait and watch (d) pour water on them
23. 23.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
24. 24.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) symbols are heavier (d) to hide the circuit
25. 25.What does a tilt switch do? (a) flips up or down (b) stays where you flip it (c) closes when tipped over (d) springs back when let go
26. 26.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
27. 27.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a wooden stick. Does the bulb glow? (a) No (b) Yes
28. 28.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
29. 29.True or false: a toggle switch closes when tipped over. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a torch (b) a tube light (c) a siren (d) a street light
31. 31.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
32. 32.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe
33. 33.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) light energy (d) wind energy
34. 34.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) voltmeter (c) battery (d) motor
35. 35.What does a reed switch do? (a) closes when tipped over (b) closes near a magnet (c) flips up or down (d) stays where you flip it
36. 36.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
37. 37.True or false: a steel spoon is a conductor. (a) False (b) True
38. 38.🔋 3 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
39. 39.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
40. 40.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity

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