Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 662 · 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.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
2. 2.True or false: a rice cooker mainly makes sound. (a) True (b) False
3. 3.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
4. 4.🔍 Which is the odd one out? (a) an exhaust fan (b) a table fan (c) an electric drill (d) a water heater
5. 5.💡 2 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
6. 6.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in parallel (d) in series
7. 7.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the plastic handle (d) the bare end
8. 8.🔘 When a switch is ON, the circuit is … (a) broken (b) cut (c) open (d) closed
9. 9.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a trusted adult (c) a stranger online (d) nobody
10. 10.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
11. 11.Which of these is not safe? (a) touch a fallen wire (b) keep drinks far away (c) take cells out after use (d) use small battery cells
12. 12.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) straight lines (d) wavy lines
13. 13.Which of these gives us electricity? (a) a television (b) a computer (c) a solar panel (d) a mobile phone
14. 14.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
15. 15.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe
16. 16.🔌 Most metals are good … (a) insulators (b) batteries (c) conductors (d) magnets only
17. 17.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
18. 18.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
19. 19.Which drawing is the symbol for a capacitor? (a) a dot where wires meet (b) two equal parallel lines (c) one tall, one short bar (d) triangle, bar and arrows
20. 20.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
21. 21.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
22. 22.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
23. 23.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) sound energy (c) movement energy (d) chemical energy
24. 24.🔋 A 6 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
25. 25.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) diode (b) ammeter (c) wire (d) switch
26. 26.True or false: to use small battery cells is not safe. (a) True (b) False
27. 27.💡 4 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. How many bulbs glow?
28. 28.Which of these means the circuit is closed? (a) the switch is ON (b) a wire is cut (c) the bulb is unscrewed (d) a cell is taken out
29. 29.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
30. 30.✏️ In a circuit diagram, which part is drawn as a straight line? (a) battery (b) wire (c) diode (d) switch
31. 31.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
32. 32.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
33. 33.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a closed circuit (c) an open circuit (d) a series circuit
34. 34.Which of these is not safe? (a) throw cells in a fire (b) fly kites in open fields (c) build with an adult near (d) use small battery cells
35. 35.🔋 A 6 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
36. 36.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
37. 37.True or false: to open a phone charger is not safe. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) throw cells in a fire (b) stay away from pylons (c) use a cable with cuts (d) touch a switch when wet
39. 39.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
40. 40.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator

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