Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 92 · 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: to use mains for a project is not safe. (a) False (b) True
2. 2.Which of these is an insulator? (a) a brass key (b) an iron nail (c) a metal paper clip (d) a wooden stick
3. 3.Which of these gives us electricity? (a) a solar panel (b) a water pump (c) a washing machine (d) a television
4. 4.💡 2 identical bulbs are joined in series with an 8 V battery (ideal wires). How many volts does each bulb get? =
5. 5.True or false: a reed switch closes when tipped over. (a) False (b) True
6. 6.True or false: to fly kites in open fields is safe. (a) False (b) True
7. 7.Which of these means the circuit is closed? (a) the switch is OFF (b) the loop is complete (c) a wire has come loose (d) a cell is taken out
8. 8.🔍 Which is the odd one out? (a) a wooden stick (b) a metal paper clip (c) a dry cork (d) a glass marble
9. 9.Which of these mainly makes movement? (a) a mixer grinder (b) a school bell (c) a buzzer (d) an electric kettle
10. 10.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) a plastic gap (d) one loose end
11. 11.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
12. 12.True or false: a push button works only while pressed. (a) False (b) True
13. 13.Which of these mainly makes sound? (a) an electric kettle (b) a buzzer (c) a room heater (d) an LED lamp
14. 14.🔁 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
15. 15.Which of these mainly makes movement? (a) a ceiling fan (b) a school bell (c) a water heater (d) an LED lamp
16. 16.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
17. 17.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) it is just untidy (c) it spoils the paint (d) water makes it cold
18. 18.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) symbols are heavier (d) quick and clear for all
19. 19.Which of these mainly gives out light? (a) a room heater (b) a rice cooker (c) a traffic signal (d) a water heater
20. 20.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) wire (c) bulb (d) voltmeter
21. 21.Which of these uses electricity? (a) a solar panel (b) a refrigerator (c) a bicycle dynamo (d) a wind turbine
22. 22.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
23. 23.Which drawing is the symbol for a cell? (a) a line lifted at a gap (b) a circle with M inside (c) one tall, one short bar (d) many long-short pairs
24. 24.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is OFF, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
25. 25.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
26. 26.🔋 What should you do with used-up cells? (a) cut them open (b) throw them in a fire (c) give them for recycling (d) bury them in soil
27. 27.🔍 Which is the odd one out? (a) a graphite rod (b) an iron nail (c) a rubber eraser (d) a metal paper clip
28. 28.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.🔍 Which is the odd one out? (a) fly kites in open fields (b) use small battery cells (c) keep drinks far away (d) fly a kite near wires
30. 30.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
31. 31.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
32. 32.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
33. 33.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
34. 34.True or false: a push button springs back when let go. (a) True (b) False
35. 35.True or false: a long and a short line is the symbol for a voltmeter. (a) True (b) False
36. 36.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
37. 37.True or false: if a wire has come loose, the circuit is closed and current flows. (a) True (b) False
38. 38.True or false: a rubber eraser is a conductor. (a) False (b) True
39. 39.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a toggle switch (c) a reed switch (d) a tilt switch
40. 40.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True

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