Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 118 · 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.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
2. 2.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a paper strip. Does the bulb glow? (a) Yes (b) No
3. 3.Which of these is a conductor? (a) a plastic straw (b) a dry cork (c) a steel spoon (d) a ceramic cup
4. 4.🔍 Which is the odd one out? (a) stay away from pylons (b) throw cells in a fire (c) dry your hands first (d) take cells out after use
5. 5.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) battery (c) diode (d) capacitor
6. 6.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
7. 7.Which of these mainly makes sound? (a) a tube light (b) an electric iron (c) a siren (d) a ceiling fan
8. 8.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
9. 9.Which of these is an insulator? (a) an iron nail (b) a cotton thread (c) a steel coin (d) a metal paper clip
10. 10.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a table fan (b) an exhaust fan (c) an electric kettle (d) an electric toy car
12. 12.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) battery (b) diode (c) cell (d) voltmeter
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
14. 14.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
15. 15.What does a toggle switch do? (a) closes when tipped over (b) works only while pressed (c) springs back when let go (d) flips up or down
16. 16.Which of these is an insulator? (a) a steel spoon (b) a metal paper clip (c) a graphite rod (d) a paper strip
17. 17.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
18. 18.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) none (d) one for each bulb
19. 19.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a tilt switch (d) a toggle switch
20. 20.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) junction (b) cell (c) resistor (d) voltmeter
21. 21.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) battery (b) LED (c) wire (d) voltmeter
22. 22.⚠️ Is it safe to touch a switch when wet? (a) not safe (b) safe
23. 23.Which drawing is the symbol for a capacitor? (a) a plain rectangle (b) one tall, one short bar (c) two equal parallel lines (d) a small empty box
24. 24.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
25. 25.⚡ What does a loudspeaker mainly change electricity into? (a) movement (b) sound (c) heat (d) light
26. 26.💡 4 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
27. 27.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
28. 28.🔍 Which is the odd one out? (a) take cells out after use (b) touch a fallen wire (c) use mains for a project (d) poke things in a socket
29. 29.🔍 Which is the odd one out? (a) take cells out after use (b) stop if a part gets hot (c) open a phone charger (d) build with an adult near
30. 30.🔘 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 ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
31. 31.⚡ What does a traffic signal mainly change electricity into? (a) movement (b) sound (c) light (d) heat
32. 32.True or false: a dry cork is an insulator. (a) False (b) True
33. 33.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) touch a switch when wet (b) fly a kite near wires (c) stop if a part gets hot (d) use a cable with cuts
35. 35.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
36. 36.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
37. 37.🔦 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) Yes (b) No
38. 38.🔋 How many 2 V cells must be joined in series to give 8 V?
39. 39.🔋 How many 3 V cells must be joined in series to give 9 V?
40. 40.True or false: to touch a fallen wire is not safe. (a) True (b) False

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