Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 542 · 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.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
2. 2.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) to make bulbs dim (d) each gets full voltage
3. 3.Which of these is not safe? (a) fly kites in open fields (b) stop if a part gets hot (c) throw cells in a fire (d) use small battery cells
4. 4.True or false: triangle, bar and arrows is the symbol for a voltmeter. (a) False (b) True
5. 5.Which of these means the circuit is closed? (a) the switch is OFF (b) the switch is ON (c) a cell is taken out (d) the bulb is unscrewed
6. 6.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a push button (c) a slide switch (d) a reed switch
7. 7.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
8. 8.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) Yes (b) No
9. 9.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 230 V (c) 9 V (d) 12 V
10. 10.What does a toggle switch do? (a) slides side to side (b) works only while pressed (c) flips up or down (d) springs back when let go
11. 11.🔍 Which is the odd one out? (a) an iron nail (b) a steel coin (c) a cotton thread (d) a graphite rod
12. 12.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
13. 13.🔘 Which kind of switch flips up or down? (a) a push button (b) a slide switch (c) a toggle switch (d) a tilt switch
14. 14.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a younger child (c) a stranger online (d) a trusted adult
15. 15.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the bare end (d) the steel shaft
16. 16.True or false: a toggle switch closes near a magnet. (a) True (b) False
17. 17.True or false: a cotton thread is an insulator. (a) False (b) True
18. 18.True or false: a dry cork is an insulator. (a) False (b) True
19. 19.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
20. 20.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) battery (c) voltmeter (d) bulb
21. 21.Which of these means the circuit is open? (a) the switch is ON (b) a cell is taken out (c) all wires are joined (d) the loop is complete
22. 22.Which of these is an insulator? (a) a plastic straw (b) a steel spoon (c) a metal paper clip (d) a safety pin
23. 23.🔋 What should you do with used-up cells? (a) cut them open (b) throw them in a fire (c) bury them in soil (d) give them for recycling
24. 24.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) one bulb out, all go out (c) a break stops every bulb (d) a single current path
25. 25.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
26. 26.⚡ A solar panel changes which kind of energy into electricity? (a) light energy (b) sound energy (c) chemical energy (d) wind energy
27. 27.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
28. 28.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
29. 29.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
30. 30.True or false: a torch mainly makes sound. (a) True (b) False
31. 31.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
32. 32.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
33. 33.Which of these is a conductor? (a) a dry cork (b) a steel spoon (c) a cotton thread (d) a wooden stick
34. 34.✏️ In a circuit diagram, which part is drawn as a straight line? (a) bulb (b) diode (c) resistor (d) wire
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) No (b) Yes
36. 36.🔦 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 safety pin. Does the bulb glow? (a) Yes (b) No
37. 37.⚡ What does a room heater mainly change electricity into? (a) sound (b) movement (c) heat (d) light
38. 38.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
39. 39.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
40. 40.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed

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